Carl Czerny (German: [kaɹl ˈtʃɛrni]) (21 February 1791 – 15 July 1857) was an Austrian pianist, composer and teacher. He is best remembered today for his books of études for the piano. Czerny's music was profoundly influenced by his teachers, Muzio Clementi, Johann Nepomuk Hummel, Antonio Salieri and Ludwig van Beethoven.



Early life
Carl Czerny was born in Vienna to a musical family of Czech origin. His grandfather was a violinist and his father was an oboist, organist, and pianist. His family came to Vienna from Nymburk, Bohemia and Carl himself did not speak German until the age of ten. A child prodigy, Czerny began playing piano at age three and composing at age seven. His first piano teacher was his father, Wenzel Czerny, who taught him mainly Bach, Mozart, and Clementi. Czerny began performing piano recitals in his parents' home. Beethoven, attending one such recital, was so impressed with Czerny's performance of his Pathétique Sonata that he took on the 10 year old as a student. Czerny remained under Beethoven's tutelage for the next three years.Czerny went on to take lessons from Johann Nepomuk Hummel and Antonio Salieri. Czerny also attended courses which Muzio Clementi held in Paris, Vienna, St. Petersburg, Berlin, Prague, Rome and Milan.
Czerny made his first public performance in 1800 playing Mozart's Piano Concerto No. 24 in C minor. However, he was never confident in his abilities as a performer and resolved to withdraw permanently from the stage. At age 21, in February 1812, he returned to the public to give the Vienna premiere of Beethoven's Piano Concerto No. 5, "Emperor".

Teaching
At age fifteen, Czerny began a very successful teaching career. Basing his method on the teaching of Beethoven and Clementi, Czerny taught up to twelve lessons a day in the homes of Viennese nobility. His notable students included Sigismond Thalberg, Stephen Heller, Alfred Jaëll, Theodor Leschetizky, Theodor Kullak, Theodor Döhler, and Anna Caroline Oury. Czerny's fees were so steep that some students, such as Stephen Heller, were unable to afford it and had to switch teachers.
His most famous student was Franz Liszt, who began studying with Czerny at age nine. Czerny was Liszt's only teacher. Upon taking him on as a student, Czerny forced Liszt to abandon all repertoire for the first few months, insisting he play only scales and exercises to strengthen his technique.
As a concert pianist, Liszt went on to include several Czerny compositions in his repertoire. Liszt also dedicated his twelve Transcendental Etudes to Czerny, who was among the first composers to pioneer the "etude" form. Liszt also collaborated with Czerny on the Hexaméron; a joint work along with fellow composers Frédéric Chopin, Sigismond Thalberg, Henri Herz, and Johann Peter Pixis.

Composition
Czerny composed a very large number of pieces (up to Op. 861), including a number of masses and requiems, and a large number of symphonies, concertos, sonatas and string quartets. Few of these pieces are played today. The enduring part of Czerny's repertoire is the large number of didactic piano pieces he wrote, such as The School of Velocity and The Art of Finger Dexterity. He was one of the first composers to use étude ("study") for a title.
Czerny's body of works also include arrangements for eight pianos, four hands each, of two overtures of Gioachino Rossini. He also left an essay on performing the piano sonatas of Beethoven. He published an autobiographical sketch, "Erinnerungen aus meinem Leben" (1842; "Memories from My Life").
On a minor note, Czerny was one of 50 composers who wrote a Variation on a theme of Anton Diabelli for Part II of the Vaterländischer Künstlerverein (published 1824). He also wrote a coda to round out the collection. Part I was devoted to the 33 variations supplied by Beethoven, which have gained an independent identity as his Diabelli Variations, Op. 120. Czerny maintained a relationship with Beethoven throughout his life, giving piano lessons to Beethoven's beloved nephew Carl, and proofreading many of Beethoven's works before they were published.

Death
Czerny remained in Vienna for most of his life, only leaving three times (he visited Leipzig in 1836, Paris and London in 1837, and Lombardy in 1846). He died in Vienna at the age of 66. He never married and he had no near relatives. Shortly before his death, he disposed of his considerable fortune with the help of his friend and lawyer Leopold von Sonnleithner.

Recordings
Signum Records recently issued at least three CD recordings of Czerny's symphonies and concerti, including a concerto for piano four hands in C major. In fact, the view of Czerny as primarily a composer of didactic works is being challenged, as can be seen in the review cited below of a Sony Classical CD of some of Czerny's four-hand works. Nimbus Records is in course of issuing recordings of all 11 of Czerny's solo piano sonatas, played by Martin Jones. His Symphony No. 1 ('Grand Symphony') was even issued on a CD supplement to an issue of BBC Music Magazine.

List of compositions by Carl Czerny
By opus number
Works not on this list are currently being transferred from IMSLP.

Op. 1, Variations Concertantes for Pianoforte and Violin on a theme by Krumpholz
Op. 2, Brilliant Rondeau on Cavatine de Carafa à quatre mains
Op. 3, Brilliant Fantasy and Variations on "Romance of Blangini" with Accompanied two Violas, Alto, and Violincello (Double Bass ad lib.)
Op. 4, Le Souvenir, Variations
Op. 5, Grand Rondeau No. 1, in C
Op. 6, Waltz or Exercises
Op. 7, Sonata No. 1 in A♭ (published by Artaria) (1810)
Op. 8, Amicitiae, Andantino with Variations
Op. 9, Brilliant Variations and easy (Theme favorite)
Op. 10, Brilliant Grand Sonata in C minor, for four hands
Op. 11, Brilliant Divertissement, for four hands
Op. 12, Variations (Trauer-Walzer D. 365 No . 2 by F. Schubert) Solo and Duet
Op. 13, Sonata No. 2 in A minor (published by Diabelli)
Op. 14, Brilliant Variations on an Austrian Waltz
Op. 15, Recreation for the Carnival, Brilliant Choice of Waltz and easy; two books
Op. 16, Introduction and Variations on "O cara memoria," with Vcello. Acct. ad lib.
Op. 17, Brilliant Rondo on a favorite Menuet of C. Kreutzer (also has the title: Fantaisie de A. Delaseurie sur un air suisse - recorded with this title on the label Ars, and in score - see the Katalog des Deutschen Musikarchivs.) - for piano six hands
Op. 18, Brilliant Grande Polonaise with an accompaniment for a second Pianoforte, or for a Quartett, both ad lib.
Op. 19, Variations of a Barcarole favorite
Op. 20, Introduction and Variations on a Marche favorite della Donna del Lago
Op. 21, Introductions and Variations on a Cav.(cavalry?) Favorite "Sorte secondami"
Op. 22, Rondino No. 1 on "Cara attendimi," with Quartett Accompaniments ad lib.
Op. 23, Brilliant Rondo No. 2, for 4 hands, in G
Op. 24, Presto caratteristico, Duet in A minor
Op. 25, Brilliant Variations on "Ah come nancondere" for 4 hands
Op. 26, Rondo quasi Capriccio, in E♭
Op. 27, Fantasy in B♭
Op. 28, Grand Concerto in F, with Orchestral accompaniments
Op. 29, Rondino No. 2 on a Theme de l'Opera Corradino
Op. 30, Rondino No. 3 on a Theme de l'Opera Armida
Op. 31, 3 Fugues
No. 1 Fugue in F
No. 2 Fugue in E♭ minor
No. 3 Fugue in C
Op. 32, New Year's gifts, 24 Waltzes
Op. 33, La Ricordanza, Variazioni sopra un Tema di Rode
Op. 34, Duet for the Pianoforte for 4 hands, according to the first Trio of Mayseder
Op. 35, Waltz di Bravura
Op. 36, Impromptus on Brilliant Variations on Cotillon de Ballet Arsena
Op. 37, Fantasy followed by a Romance varied
Op. 38, First Grand Potpourri Concerto for two Pianoforte for 6 hands
Op. 39, Rondino No. 4 on a Theme by Fesca
Op. 40, Brilliant Variations on Ballet La Danseuse d'Arthere, for 4 hands
Op. 41, Rondino No. 5 on a Theme by Beethoven
Op. 42, Rondino No. 6 on an original Theme
Op. 43, Brilliant Divertissement No. 2 on a Cav. "Aure felice," for 4 hands
Op. 44, Romance of Beethoven arranged as a Brilliant Rondo, for 4 hands
Op. 45, Charms of Baden, Rondo Pastoral
Op. 46, Variations on a Bohemian Air
Op. 47, Grand Exercise in bravura in the form of Brilliant Rondo
Op. 48, "Die Schiffende," Song with Pianoforte, accompanied words by Holtz
Op. 49, Two Brilliant Sonatinas
No. 1 Sonatina in C
No. 2 Sonatina in F
Op. 50, Two Brilliant Sonatinas for 4 hands
No. 1 Sonatina in G
No. 2 Sonatina in C
Op. 51, Two Brilliant Sonatinas, for Pianoforte and Violin
No. 1 Sonatina in B♭
No. 2 Sonatina in G
Op. 52, Variations in an easy style on the Air from Die Fee aus Frankreich
Op. 53, Rondoletto scherzando in C
Op. 54, Brilliant and Characteristic Overture in B minor, for 4 hands
Op. 55, Charms of Friendship, Theme of Beethoven
Op. 56, Introduction and Variations on the first Galoppe
Op. 57, Grande Sonata No. 3, in F minor (published by Peters) (1824)
Op. 58, Legerrazza e Bravura, Brilliant Rondo, with Quartett accompaniment
Op. 59, Introduction and Brilliant Variations on a Rondo and Marche favorite of Roland
Op. 60, Einleitung: Variations and Rondo on C. M. von Weber's Hunting Chorus from Euryanthe, with Orchestral Accompaniments (Wien : S.A. Steiner, 1824)
Op. 61, Preludes, Cadences, and a short Fantasia in a brilliant style
Op. 62, Caprice and Variations on "An Alexis" by Himmel
Op. 63, Brilliant and easy Toccatine on Tarrantelle of the Ballet Die Fee und der Ritter
Op. 64, Fantasy in the modern style on Potpourri
Op. 65, Sonata No. 4 in G (published by Kistner)
Op. 66, Rondo and Waltz in C
Op. 67, Concert Variations followed by a Hunting Rondo on the walk of the Ballet, Barbe Bleu, for 4 hands
Op. 68, Passionate Rondo
Op. 69, Allegretto grazioso sopra un Tema de Ballo, Barbe Bleu
Op. 70, Romance for Pianoforte, in D
Op. 71, Brilliant Nocturne for "Das waren mir selige Tage," for 4 hands
Op. 72, 2 Nice Rondos
No. 1 Nice Rondo in C
No. 2 Nice Rondo in G
Op. 73, Variations on "Gott erhalte Franz den Kaiser," for piano with quartet or orchestral accompaniments (1824)
Op. 74, Brilliant Rondoletto in E♭
Op. 75, 3 Grand Allegros
No. 1 Grand Allegro in G
No. 2 Grand Allegro in B minor
No. 3 Grand Allegro in A♭
Op. 76, Sonata No. 5 in E (published by Diabelli according to the list on page 2 of opus 730. Also published in Vienna by Weigl. 24 pages, with - Allegro molto moderato ed espressivo - Andante cantabile (B major) - Scherzo Presto - Andantino con variazioni (5 Variations and coda) - Finale Toccatina (Allo. moderato.)))
Op. 77, "God save the King," with Variations
Op. 78, Concerto for Fortepiano and Orchestra, in C
Op. 79, 3 Grand Marches, solo and duet
No. 1 Grand Marche in C
No. 2 Grand Marche in D
No. 3 Grand Marche in E♭
Op. 80, Introduction and 7 Variations, Concerto for Pianoforte, and Flute (or Violin)
Op. 81, Variations on Marche Anglais
Op. 82, Grand Exercise for Pianoforte, in F minor
Op. 83, Romance from W. Scott's "Fraulein vorn See" for a Voice with Pianoforte accompaniment
Op. 84, Grand Potpourri No. 2 for 6 hands
Op. 85, 3 Polonaises
Op. 87, Introduction et variations faciles pour le pianoforte à quatre mains sur un walse de Mr. le Comte de Gallenberg (Leipzig : H.A. Probst, 1825)
Op. 88, Septième rondino pour le piano-forte : sur un motif de l'opéra Elisa e Claudio de Mercadante (Hannover, C. Bachmann, 1825)
Op. 89, Capriccio à la fuga per il pianoforte
Op. 90, Six rondeaux mignons: pour le piano-forte à quatre mains, à l'usage des elèves avancés (Hannover, C. Bachmann, 1826)
Op. 91, Variations sur l’air allemand "Es ritten drei Reiter zum Thore hinaus, Ade"
Op. 92, Toccata ou exercice pour la pianoforte in C major modern republication
Op. 95, Notturno brillant (in E♭ major, for piano, violin, viola, violoncello, flute, clarinet, horn, bassoon, and double bass) (recorded on cpo. In NYPL)
Op. 97, Neuvième rondino (de Chasse)
Op. 98, Dixième rondino sur un motif de W. A. Mozart pour le piano-forte
Op. 100, Douzième rondino (militaire) pour le piano-forte seul ; sur un motif de L. Cherubini
Op. 101, Grand march for four hands at one piano, composed for the Coronation of the Empress Caroline of Austria. Published by J. Balls of London around 1826.
Op. 104, Trois Sonatines faciles et brillantes pour le pianoforte seul ou avec accomp: d'un violon et violoncelle ad libitum (from the searchable archive of the Altenberg Trio site)
Op. 105, Trio no. 1 in E♭ for piano, violin, and horn (or cello) (CATNYP) (recorded on Signum)
Op. 111, Zwei Romanzen für Klavier zu drei Händen (CATNYP) (part of a larger Decameron Musicale? )
Op. 114, Valse variée pour le piano-forte.
Op. 116, Rondeau brillant (for four hands, I believe.)
Op. 118, Grande polonaise brillante pour le piano-forte (with string quartet ad libitum, according to Chez Richault edition at U. Michigan libraries.)
Op. 119, Sonate militaire et brillante pour le pianoforte à 4 mains avec accompagnement de violon et violoncelle ad libitum, composée à l’usage des élèves avancés. (1826)
Op. 120, Sonate sentimentale pour le pianoforte à quatre mains. (1826)
Op. 121, Sonate pastorale. (Also for piano four-hands, 1826.)
Op. 124, Sonate für das Pianoforte. (No. 6 in D minor.) (Zurich: Nägeli, 1840s) (Introduzione - Capriccio appassionato - (no title, but All. con moto, vivace ma serioso) - (Presto, scherzo) - Cantique de La bohème; Varié - (Presto scherzando) - Finale: Allegro con fuoco )
Op. 126, Grande serenade concertante for clarinet, horn, violoncello, and piano.
Op. 127, Rondino sur un thême favori de l'opera Le maçon d'Auber. For piano quartet. (Vienna, Diabelli & Co.)
Op. 129, Duo concertant : in G-Dur, für Flöte oder Violoncello und Klavier (recording and two new editions at NYPL)
Op. 131, Fantaisie élégante ou Potpourri brillant sur les thèmes favoris de lópéra: La dame blanche : comp. pour le pianoforte
Op. 132, Variations brillantes sur le Duo favori "Dépéchons, travaillons = Ohne Rast, angefasst" de l'Opéra: Le Maçon [de Daniel François Esprit Auber] pour le Piano-Forte à 4 mains.
Op. 136, Sonatinas for piano four hands (Canadian National Library has no. 4)
Op. 137, Allegro affetuoso for piano four hands (British Library) (pub. CF Peters around 1827.)
Op. 138, Concert sur la Marche des Grecs de l’Opéra : le Siège de Corinthe
Op. 139, Études (Übungstücke, or 31 Easy Exercises)
Op. 142, Ouverture, orkest, nr.1, op.142. In C minor. (At the Hague.)
Op. 143, Seventh Piano Sonata in E minor (published by Kistner of Leipzig. Reference included in the list of piano sonatas incorporated in the score to piano sonata no. 11, opus 730)
Op. 144, Grande fantaisie en forme de sonate, sonata no. 8 in E♭, for piano (Koninklijke Bibliotheek in the Hague has a modern score of this, published 2004.)
Op. 145, Grande fantaisie en forme de sonate, sonata no. 9 in B minor (Richault, 1827)
Op. 146, Marcia funèbre sulla morte di Luigi van Beethoven per il piano-forte solo.
Op. 148, First piano quartet (Premier grand quatuor pour le piano-forte, violon, viola et violoncelle, Peters of Leipzig, pub. 1827; at Frankfurt University Library.)
Op. 149, Rondoletto concertant: in F-dur für Pianoforte, Flöte und Violoncello ad lib.
Op. 150, Trois polonaises sentimentales (1970 repub. at Canadian National Library)
Op. 152, Grand exercice (pub. by Ant. diabelli u.C. of Vienna) (LOC)
Op. 153, Concerto for piano four-hands and orchestra in C major (recording at CATNYP on Koch-Schwann. Earlier Desto recording listed at LoC though no longer in holdings.)
Op. 155, Exsulta filia Sion : Offertorium pastorale : für vierstimmigen gemischten Chor, Streicher, 2 Oboen oder Klarinetten, 2 Trompeten, Pauken und Orgel, 2 Hörner ad lib.
Op. 156, Belohnung der fleissigen Jugend : drei Sonatinen für's Piano-Forte (at the Hague). At least no. 2 is either for piano duet or is so arranged in its current modern edition
Op. 158, Three sonatines for four-hands
Op. 159, Rondeau brillant di bravura pour le piano-forte seul
Op. 160, Introduction, variations and polacca after a theme from Bellini's Il Pirata for piano and orchestra. (from the British Library's catalog. Published by Diabelli in Vienna around 1831.)
Op. 163, Six sonatinas, piano (CATNYP)
Op. 166, Trio no. 2 in A for piano and strings (CATNYP) (pub. about 1830) (Allegro; Scherzo: Molto Allegro - Trio (umoristico); Adagio sostenuto in D - attacca Allo agitato in A minor - attacca - Allegretto piacevole in A major.
Op. 167, Sonatina for piano
Op. 170, Grandes variations brillantes pour le pianoforte à quatre mains sur le thême original favori colla campanella (Glöckchen Rondo) comp. et dediées à l'auteur du thême M.r N. Paganini
Op. 173, Trio no. 3 in E (Troisième Grand Trio) for piano and strings (Altenberg site)(published by 1829.)
Op. 175, Fantaisie-Rondo d'après l'Adelaide de Beethoven : pour le piano forte/Musical Décameron (Piano Solo version)
Op. 176, Second Musical Décameron (Piano Duet version)
Op. 177, Two fugues for string quintet.
Op. 178, Grande sonate in F minor for piano 4-hands
Op. 183, Rondeau national bohème pour le piano-forte
Op. 193, Troisième galoppe variée pour le piano-forte
Op. 196, Introduction, variations et rondo sur la cavatine (Or che son vicino a te) de Nicolini, pour le piano-forte avec accompagnement de deux violons, alto et violoncelle
Op. 197, Variations brillantes pour un pianoforte à 6 manis concertantes (on a theme from Bellini's opera Norma)
Op. 200, A systematic introduction to improvisation on the pianoforte.
Op. 202, Introduction, variations brillantes et rondeau de chasse
Op. 204, Divertissement de concert, piano, orchestra (or: Divertissement de concert; ou, Adagio, variations et rondeau, pour le piano-forte avec accompagnement d'orchestre) (Ponti's recording and five parts from about 1833 at NYPL)
Op. 205, Rondeau précedé d'une introduction comp. pour le pianoforte
Op. 209, Divertissement
Op. 210, Concertino for piano (and strings, flute, 2 oboes or clarinets, 2 bassoons, 2 horns, 2 trumpets and drums (ad libitum).) (Published by Haslinger of Vienna in the 1850s)
Op. 211, Deux Trios brillans pour pianoforte, violon et violoncelle (misspelling from the published score. Diabelli, Vienna, about 1835.) (Altenberg trio site. Also in Frankfurt University Library.)
Op. 212, Six Grand Potpourris for piano trio (Altenberg site)
Op. 213, Andante und rondo in C (LoC) for orchestra (?) published by Haslinger about 1833.
Op. 214, Piano Concerto in A minor.
Op. 220, Brilliant variations for the piano forte on the favorite tyrolienne in Rossini's celebrated opera Guillaume Tell (published in London: Goulding & D'almaine, [entre 1825 et 1832]
Op. 222, Impromptu brillant en [sic] non difficile pour le piano forte sur un pastorale de l'opéra Guillaume Tell
Op. 224, Deux Quatuors Brilliants (for piano quartet) (Deux quatuore brillans pour piano-forte, violon, alte et violoncelle)
Op. 226, Fantaisie in F minor for piano duet : Allegro con spiritoso; Andantino; Scherzo; Presto; Allegro: Tempo I
Op. 227, Rondeau brillant op. 227 : für Klavier zu 6 Händen (Source: Katalog des Deutschen Musikarchivs)
Op. 229, L'Ecole de la Vélocité (http://opac.library.usyd.edu.au. Probably a typo for opus 299, which does have this description.)
Op. 229, Divertissement militaire : für Klavier zu 6 Händen (Conflicting - one or another source may have a typo in its source-material or simply in its catalog. Source: Katalog des Deutschen Musikarchivs http://dispatch.opac.d-nb.de)
Op. 230, Quartet for four pianos in C (Quatuor concertant für vier Piano-Forte über mehrere beliebte Melodien. Diabelli, Vienna, 1830. Score at Frankfurt University Library.) (In one movement in several connected sections.)
Op. 231, Rondeaux mignons faciles et brillants sur divers motifs favoris : pour le piano
Op. 233, Rondo brillant
Op. 236, Introduction, grandes variations et finale sur une marone française
Op. 247, periodic collection of operatic fantasies (the first two on Bellini operas, the third on Meyerbeer's Robert le Diable, reaching at least 54 numbers)
Op. 248, Introduction et variations concertantes sur un air tirolienne for horn or cello and piano
Op. 249, Variations sur la valse Charmante : de Jean Strauss, le duc de Reichstadt varié pour le piano forte.
Op. 251, 3.me Décaméron
Op. 254, Grand rondeau brillant pour le pianoforte à 4 mains.
Op. 256, Fantasia concertante, für Klavier, Flöte und Violoncello in G major (CATNYP, National Library of Canada)
Op. 258, Deux thêmes originaux variés pour le pianoforte (Halle [ca. 1835])
Op. 259, Grand rondeau militaire et brillant. For piano four-hands. (H. Helmuth in Halle, around 1833?) (British Library)
Op. 261, 125 exercises. (Passagen-Übungen, piano. Pub. by Haslinger in four Volumes 1832 - 1838.)
Op. 262, Three piano quartets. (Trois quatuors brillans et non difficiles pour le pianoforte, violon, alto et violoncello. Hoffmeister of Leipzig, about 1832. Frankfurt University Library.)
Op. 268, Piano sonata no. 10 Grande sonate d'étude in B♭ (CATNYP, Canadian National Library. Recorded in 1984 on Spectrum by Vivien Harvey Slater.)
Op. 280, Grandes variations brillantes, sur une marche anglaise : pour le pianoforte avec accompagnement d’orchestre ou de quatuor, (ad libitum.) (Pub. by Artaria in Vienna around 1832.) (British Library has parts.)
Op. 289, Piano trio no. 4 in A minor (recorded on Signum. Published by Simrock in 1834, in Frankfurt University Library.)
Op. 295, Grand Trio No. 4 Air from I Montechi e Capuletti with Variations for one piano, 6 hands.
Op. 297, Brilliant Variations on a Theme from Bellini's Norma for Piano 6 Hands
Op. 299, École de velocité
Op. 314, Grande polonaise brillante précédés d’une introduction pour le pianoforte et violon concertane. (Simrock, Bonn, 1840s.) (LOC)
Op. 315, 3 cadenzas to Beethoven's Piano Concerto n.1 in C major
Op. 316, Dix petits rondeaux doigtés pour le piano; ou, amusemens utiles et agréables sur des motifs favoris, pour la jeunesse. (CATNYP. Published 1830s)
Op. 317, Introduction, theme and variations for piano on an original theme (pub. by Schuberth of Leipzig in the 1830s. In Frankfurt University Library.)
Op. 321, Rondo brillant for four-hand piano. (in a library in Frankfurt.)
Op. 323, l'Allegresse, Rondo for the piano. (published by Schuberth of Leipzig around 1850.)
Op. 325, 3 fantasie eleganti : dall'Elisir d'amore di Donizetti (CATNYP)
Op. 326, Trois thèmes favoris de l'opéra Zampa de Hérold : variés pour le piano forte
Op. 333: no. 2 - Variations sur un motif de l'opera La somnambule de Bellini (CATNYP)
Op. 335, the School of Legato and Staccato (Die Schule des Legato und Staccato - new edition published by Peters in Leipzig available)
Op. 337, Études ( Tägliche Studien ) (CATNYP)
Op. 339, Drey brillante Fantasien über die beliebtesten Motive aus Franz Schubert's Werken : für Pianoforte und Physharmonica, oder 2 Pianoforte (or horn and piano) (NYPL has on microform)
Op. 341, Variations brillantes sur un thême favori de l'opéra Hans Heiling de Henri Marschner
Op. 344, Trois rondino's non difficiles : sur des motifs favoris de l'opéra Lestocq de Auber : pour le piano-forte
Op. 345, Fantasia for piano in D minor (National Library of Canada) (republished 1973)
Op. 349a, 3 Sonatinas for piano
Op. 356, Variations brillantes sur un thème italien favori : pour le piano-forte, op. 356 = Vien quà Dorina bella = Komm, liebe holde Kleine (CLP)
Op. 364, Grand exercice pour le pianoforté
Op. 365, School of Virtuosos (Schule des Virtuosen)
Op. 369, Gran capriccio di bravura ossia studio per il piano-forte
Op. 372, Six galops en forme de rondeaux : sur des motifs favoris
Op. 373, Ten brilliant rondos founded on favorite Italian airs; composed and arr. for 2 performers on the piano forte. (CATNYP)
Op. 374, Three Rondos faciles et brillants : for flute or violin and piano (in C, D and G major)
Op. 377, Fantasy and Variations on Persiani's Ines de Castro. (from the couplings to a recording of the first sonata made in 1975 by Hilde Somer.)
Op. 380, Exercise of scales in thirds in all major & minor keys : for the pianoforte.
Op. 385, Récréations de la jeunesse : douze rondeaux instructifs & agréables : sur des thêmes modernes et favoris : pour le piano
Op. 390, Three sonatinas for violin and piano. (Published by Diabelli in Vienna in 1838. In Frankfurt University Library. No. 3 in F at the King's Library at the Hague.)
Op. 399, Die Schule der linken Hand auf dem Piano-Forte, oder: 10 grosse Uebungen
Op. 400, School of Fugue-Playing
Op. 401, Divertissement sur les motifs les plus favoris de l'opéra La juive de Halévy. (The Hague)
Op. 402, Le petit artiste au salon musical : six morceaux faciles sur des thêmes favoris : pour le piano
Op. 409, Études speciales: 50 grandi studi di perfezionamento per piano forte (pub. Milano : Gio. Canti ; in the 1800s)
Op. 410, Six sonatines faciles et doigtées : pour le piano-forte
Op. 419, Huit rondinos agréables et brillans sur des motifs les plus favoris. (Bonn, N. Simrock (1836?))
Op. 420, Sixty lessons : arranged in an easy and progressive manner for the piano forte : to facilitate the progress of young scholars, with fingerings to each lesson. (New York: Firth & Hall (1830s?))
Op. 426, Rondeau sentimental sur l'air favori: isle of beauty, fare thee well: pour le pianoforte.
Op. 433, Études préparatoires et progressives pour le Piano pour servir au développement du mécanisme et de l'expression Des Pianistes Avancés.
Op. 438, Les progrès du jeune pianiste; huit thêmes favoris variés, composés pour le piano à l'usage des jeunes élèves avancés. (CATNYP)
Op. 439, 4 Sonatinas for piano
Op. 448, Caprice et variations brillantes : sur le thême: Versàr potrà le lagrime de l'opéra: Torquato Tasso de Donizetti (at the Hague)
Op. 453, 110 easy and progressive exercises, for pianoforte.
Op. 455, National airs (CATNYP)
Op. 460, Rondo élégant sûr l'air favori: "Wo der Wiese grünes Band" de l'opéra: Des Adlers Horst de Gläser : pour le pianoforte
Op. 463, Theater-Bibliothek : für die Jugend
Op. 481, 50 Practice Pieces for Beginners
Op. 484, Rondino grazioso ou Impromptu brillant sur un thème italien favori : pour le piano. (At the library at the Hague.)
Op. 485, Variations sur les Etoiles d'amour de Joh. Strauss sen.
Op. 486, Rondino brillant sur la valse Le bal des artistes de Strauss. (Paris, Schonenberger. 1830s?)
Op. 490, Introduction et variations brillantes : sur le galop favori de l'opéra Lucia de Lammermoor de Donizetti (at the library at the Hague)
Op. 493, Fantaisie brillante on themes from the opera The Marriage of Figaro
Op. 495, Etudes progressives et brillantes.
Op. 496, Rondino sur la walse favorite de La reine Victoria.
Op. 500, Complete theoretical and practical piano forte school, from the first rudiments...to the highest...state of cultivation... (CATNYP, includes his commentary - "On the Proper Performance of All Beethoven's Works for the Piano" in Vol IV, Chapters II and III)
Op. 501, 24 Very Easy Preludes in the Most Useful Keys
Op. 502, 3 Themes Varies
Op. 503, Badinage Musical, Rondo de Galop
Op. 504, Fantasie & Variations Brillantes on the March from 'Moises'
Op. 505, Six rondeaux instructifs et agréables pianoforte composés et doigtés à l'usage des élèves avançés et de la jeunesse
Op. 506, 3 Rondinos on Themes from Auber's 'Le Domino Noir'
Op. 507, Fantasie Romantique on Auber's 'Le Domino Noir'
Op. 508, Rondino Gracieux on Lanner's Waltzes
Op. 509, Caprice on a Theme from Auber's 'Le Domino Noir'
Op. 510, Fantasie on Haydn's 'The Seasons'
Op. 511, Duo on Auber's 'Le Domino Noir' for Piano 4-Hands
Op. 512, Grande Fantasie for Piano & Harp
Op. 513, Marche pour La Jour de Naissance de S.M. la Reine Victoria
Op. 514, Quickstep pour La Jour de Naissance de S.M. la Reine Victoria
Op. 515, Fantasie on Haydn's 'The Creation'
Op. 516, Reminiscences from the Opera 'Guido et Geneva', 2 Bks.
Op. 517, Reminiscences from the Opera 'Le Domino Noir', Fantasie for Piano 4-Hands
Op. 518, Rondinetto on El Zapateado
Op. 519, 6 Rondinos Faciles on Waltzes of J. Strauss
Op. 520, 3 Rondinos Brillants on Russian, Spanish, & Norwegian Themes
Op. 521, Rondinetto Facile on a March of J. Strauss (Solo & Duet Versions)
Op. 522, 3 Rondinos Faciles on 'Gemma & Giuramento'
Op. 523, Impromptu Sentimental, "Oh Nume Benefico"
Op. 524, Variations Faciles on "Gott Erhalte" for Piano 4-Hands
Op. 525, 3 Quadrilles (Solo & Duet Versions)
Op. 526, Coronation Quadrille (Solo & Duet Version)
Op. 527, Variations Faciles on a Theme from Haydn's 'The Creation' for Piano 4-Hands
Op. 528, Rondino Facile on a Theme from Haydn's 'The Creation' for Piano 4-Hands
Op. 529, 3 Morceaux de Salon, Brillants, & Caracteristiques
Op. 530, Marche pour le Prince de Cambridge (Solo & Duet Versions)
Op. 531, Marche pour la Coronation de S.M. l'Empereur d'Autriche a Milan (Solo & Duet Versions)
Op. 532, Fantasie Expressive on 'Torquato Tasso'
Op. 533, Rondino Facile on a Theme Militaire of Beethoven (Solo & Duet Versions)
Op. 534, 3 Fantasies Brillant sur Robert Devereux
Op. 535, 2 Airs Russes Varies for Piano 4-Hands
Op. 536, 12 Rondinos Faciles on Ecossais Themes
Op. 537, Nocturne Sentimental on a Theme of Strauss
Op. 538, 3 Rondolettos Faciles on Favorite Themes
Op. 539, 1st Grande Overture, Irlandaise (Solo & Duet Versions)
Op. 540, 3 Fantasie Brillante on Marschner's Opera 'Baber'
Op. 541, 2 Prussian National Themes with Variations
Op. 542, Variations & Finale on a Prussian National Theme
Op. 543, 2nd Grand Overture, Scotch (Solo & Duet Versions)
Op. 544, 3rd Grand Overture, English (Solo & Duet Version)
Op. 545, Hommage a la Reine Victoria, Fantasie Brillante
Op. 546, 12 Rondinos Faciles sur Fleurs Anglais, Ecossais, & Irlandais
Op. 547, 3 Rondolettos Elegans on Diverse Themes
Op. 548, Rondo on Themes from the Opera 'Czaar et Zimmermann' (cf. Zar und Zimmermann by Albert Lortzing)
Op. 549, Fantasie on Themes from the Opera 'Czaar et Zimmermann'
Op. 550, Impromptu & Waltz on Themes from the Opera 'Czaar et Zimmermann'
Op. 551, Rondoletto on a Theme from the Opera 'Czaar et Zimmermann'
Op. 552, 3 Themes & Variations for Piano 4-Hands
Op. 553, Sechs tägliche Oktav-Uebungen in fortschreitender Schwierigkeit (Six Octave Studies in Progressive Difficulty) für das Pianoforte (CATNYP)
Op. 555, 8 scherzi capricciosi per il pianoforte
Op. 565, Velocity Studies (LoC)
Op. 583, Douze rondeaux amusants et instructifs pour le pianoforte à quatre mains, sur des thèmes les plus favoris des opéras français et italiens. (Bronsvic, G. M. Meyer, jr., 1840s.) (LoC)
Op. 593, XII rondino's faciles et doigtés pour le piano sur des motifs favoris de Mozart et Rossini (Canadian National Library)
Op. 599, Études, (Erster Wiener Lehrmeister im Pianofortespiel ) (CATNYP)
Op. 603, Preludes and Fugues for Organ with Obligatory Pedal (1836)
Op. 604, Huit nocturnes romantiques de différents caractères
Op. 606, 18 petits rondeaux & variations sur des mélodies populaires allemandes [musique] Deutsche Voklsgesänge : pour le piano pour faciliter les progrès des élèves avancés (Canadian National Library)
Op. 607, Préludes Et Fugues Pour L'orgue Avec Pédale Obligée en la mineur (1838) (CLP)
Op. 609, Les deux sœurs, 18 rondinos for piano four-hands. (Simrock edition at Library of Congress has title 24 airs populaires en rondeaux composés et doigtés par Ch. Czerny.)
Op. 618, Douze rondeaux amusans : pour le pianoforte à quatre mains : sur des thèmes allemands et italiens.
Op. 625, Productions de salon. (Fantasies for piano and violin on various themes by Donizetti, composed with Leon Herz - his opp. 13–18.)
Op. 627, 12 Preludes for Organ, Harmonium or Piano
Op. 636, 24 studii della piccola velocita per pianoforte... (German title from edition at Library of Congress - Vorschule zur Fingerfertigkeit auf dem Pianoforte.)
Op. 638, Belle Viennoise, rondoletto brillant su Anna, polka favorite de Strauss, pour piano (pub. Philadelphia, A. Fiot, 196 Chestnut st., Importer of music & musical instruments; New York, W. Dubois, 315 Broadway ca. 1850 )
Op. 647, Nocturne pour le piano (Vienne [1843])
Op. 684, Aufmunterung zum Fleiss: 24 unterhaltende Übungstücke [für das Pianoforte] / Carl Czerny.
Op. 686, Grande sonate pour piano et violon (pub. 1842) (Breitkopf & Härtel no. 6676, their publication may be of later date.)
Op. 698, 20 Voluntaries (Preludes) for Organ with obligatory pedal )
Op. 699, Études, (Kunst der Fingerfertigkeit ) (CATNYP)
Op. 718, 24 Études, (Etüden für die linke Hand ) (CATNYP)
Op. 726, Salve Regina : offertorio per coro con accompagnamento di due violini, viole, violoncello e basso, un flauto, due clarinetti, due fagotti e due corni ed anche con accompagnamento di organo o pianoforte.
Op. 730, Piano Sonata no. 11 in D♭ , composée et dédié à Monsieur le Baron de Lannoy(Häslinger edition of 1843 is at IMSLP) (inside front page has a list of the first 11 sonatas)
Op. 735, Terzen-Übung und Etude für die Linke Hand. (Three etudes for the left hand alone.)
Op. 740, Études, (Kunst der Fingerfertigkeit ) (The Art of Finger Dexterity) (CATNYP)
Op. 741, Les trois amateurs: fantaisies brillantes: à six mains pour le piano (piano six hands)
Op. 748, Le début, 25 Études
Op. 751, Studies, piano duet (CATNYP)
Op. 758, Rondos on Motives from Wagner Operas
Op. 765, Étude Courante
Op. 767, Fleurs de l'expression, 50 studies
Op. 773, Le début du jeune pianiste: 6 rondinos pour le pianoforte.)
Op. 776, Impromptu Fugue for Pianoforte.
Op. 777, 24 Exercises for the Five Fingers.
Op. 779, L'infatigable : grand étude de vélocité pour le piano. (Recently republished by Eulenburg in Zurich, Edition Eulenburg in New York, 1977.)
Op. 780, Symphony no. 1 in C minor "Grand Symphony"
Op. 781, Symphony no. 2 (of 6) in D major
Op. 785, 25 Grand Characteristic Studies
Op. 788, Sonate im Style des Domenico Scarlatti für das Pianoforte.
Op. 792, Premiers moyens d'acquérir de la dextérité sur le piano, 35 studies
Op. 792b, Grand exercice des arpèges
Op. 794, Le Plaisir Du Jeune Pianiste : après les premières Leçons ; Choix de cent-soixante petites Récréations en formes d' Airs, Fantaisies, Rondolettos, Transcriptions, Chansons sans Paroles, Danses, Scherzos, Variations, etc. etc. Sur Les Mélodies Les Plus Favorites
Op. 802, Exercices pratiques des doigts. (a new edition published by Heugel of Paris in 1923.) (LoC)
Op. 803, Vierzig leichte Tonstücke in fortschreitender Ordnung : für Anfänger im Pianofortespiel ; als erstes Hülfsmittel zur Förderung des Notenlesens, der Fingerfertigkeit und des Vortrags
Op. 804, Album élégant des Dames-Pianistes, 24 Morceaux mélodieux
Op. 805, 3 Rondeaux, Galops brilliantes
Op. 807, Neue Studien
Op. 810, Rondeau Brilliante
Op. 814, Brilliante Fantasie on Don Juan
Op. 816, Quatuor concertant No. 2, 4 Pianos
Op. 817, 80 Leichte und fortschreitende Anfängerstücke
Op. 818, 50 Studien zur Gelenkigkeit der Finger
Op. 819, 28 melodisch-rhythmische Studien
Op. 820, 90 Daily Studies
Op. 821, Études, ( Achttaktige Übungen ) (160 Eight-Measure Studies) (CATNYP)
Op. 822, Gradus ad Parnassum; collection de grands exercises de tout genre dans le style élégant et dans le style sévère, pour le piano. (CATNYP)
Op. 823, "The Little Pianist"
Op. 824, Praktische Taktschule = (Ecole pratique de la mesure) für Pianoforte zu 4 Händen
Op. 825, Amusement des jeunes amateurs, petites et brillantes recreations en forme de rondos & variations pour piano composés par Charles Czerny, Op. 825 ; (1) Elfin Waltz, (2) National Schottisch, (3) Montecchi E Capuletti, (4) Puritani, Polacca, (5) Aurora Waltz, (6) Zapateado, (7) Russian Hymn, (8) Magic Flute, (9) Wm. Tell, (10) Don Juan, (11) Petit Tambour, (12) Carnaval De Venise
Op. 827, Rondinos & variations, Piano 4 Hands
Op. 828, Rondinos & variations élégants
Op. 829, Melodisch-brillante Studien
Op. 830, Saltarella capriciosa
Op. 832, Morceaux Caract

L'Agitation
Romance
Confiance
Rejouissance
Persuasion
Les Chasseurs
La Mazourka
Les Papillions
Courante
Sonnerie Harmonique
Jubilation
Saltarelle

Op. 833, 3 Rondinos
Op. 834, Die höhere Stufe der Virtuosität : neue Folge der Schule der Geläufigkeit für das Pianoforte (Queens College, Miami University, Sydney University Library in Australia, Harvard have this. The firm of Litolff in Braunschweig published this in the 19th century.)
Op. 835, Méthode pour les enfants
Op. 836, Krause-Etudes
Op. 837, Das moderne Klavierspiel
Op. 838, Studien zur Kenntnis aller Akkorde des Generalbasses
Op. 840, 50 exercices progressifs dans tous les tons
Op. 841, 15 rondinos for solo piano on beloved themes.
Op. 842, 6 Morceaux faciles
Op. 843, 10 Pieces

Polka bohémienne hongroise
Defilier-Marsch
Mädele, ruck, ruck, ruck
Die schönsten Augen (Stigelli)
Torquato Tasso
An Alexis (Himmel)
Barcarolle vénitienne
Les Yeux bleus (Arnaud)
Polka (Strauss)
Galop-Rondino

Op. 844, 20 Rondinos for 2 Pianos
Op. 845, 12 Grandes Études de agilité et perfectionnement
Op. 846, Impromptu
Op. 848, Nouveaux Exercises Journalier
Op. 849, 30 études (Studies of Mechanism) (LoC), introduction to op. 299
Op. 850, 5 Fantaisies brillantes et concertantes, Piano 8 Hands
Op. 853, Étude en forme de tarantelle
Op. 854, La Clochette (Bagatelle)
Op. 855, Études mélodiques, concertantes et faciles, Piano 4 Hands
Op. 856, The Pianist in the Classical Style (Preludes and Fugues)
Op. 857, Grand fantaisie sur Si j'étais roi, Piano 4 Hands
Op. 858, 30 etudes melodiques et concertantes pour piano
Op. 860, Oberon (Grand duo brillant et concertant, 2 Pianos)
Op. 861, 30 Studies for Left hand

Probably without opus
Letters to a Young Lady on the Art of Playing the Pianoforte
Variations on the Beloved Sehnsucht Waltz by Beethoven
Symphony in D (1814?) (Allegro molto quasi presto - Adagio quasi andante in F - Scherzo: Molto presto in D minor - Allegro molto in D)
Symphony no. 3 in C major?
Symphony no. 4 in D minor?
Symphony no. 5 in E♭ (1845) (published Leipzig : MVMC, 2001, c1997) (CATNYP)
Symphony no. 6 in G minor (according to Records International, his last symphony)
Nonet (1850) (Recorded on MDG by the Consortium Classicum)
Ireland: 3 Popular Irish Airs (1860)

Paddy Carey
Paddy O'Carroll
The Legacy

Andante e polacca for horn and piano. Referred to as op. posth. with a recording (that of Barry Tuckwell and Daniel Blumenthal made for Etcetera in 1992).
Beatus vir : for SATB voices, a cappella (published by New York : Lawson-Gould Music Publishers ; Miami, Fla. : Warner Bros. Publications [distributor], 2001.)
There is, according to a Canadian Broadcasting recording, a "Grand sonata" for violin and piano written in 1807 in A major recorded which may or may not be that which was published in 1842.
Many string quartets (over 20?)
String quartet in C minor edited by Bernhard Pauler from Sources/Manuscript and published by Amadeus-Verlag, Winterthur in 2006
String quartet no. 20 in C major, 1849: holograph of manuscript score (and parts?) at Library of Congress
String quartet no. 28 in A♭ major, 1851: holograph at Library of Congress
Also
From the Altenberg trio site - several unpublished piano trios.

Note:

A catalog was published in 1834 of "Carl Czerny's sämmtliche Original-Compositionen von opus 1 bis 300" by Diabelli. (The National Library of Canada owns a copy. This is not a combined score of the 300 works, but a list, possibly with incipits - main themes/first lines/first few bars - of each.)

Czerny's arrangements, editing projects, etc.
Bach keyboard works (some edited, some arranged, a solo keyboard partita into a flute and piano work, for example)
Beethoven symphonies and overtures, sonatas for piano, for violin and for cello (including an arrangement for cello of the "Kreutzer" sonata by Czerny), and chamber works for larger ensembles
Haydn symphonies
Mozart symphonies among other works (Deutsche Tänze)
Operas by Donizetti and others