超絶技巧練習曲
Liszt included several Czerny compositions in his repertoire and also dedicated his twelve "Transcendental Études" to Czerny. He also collaborated with Czerny on the "Hexaméron". But even Liszt suggested, in an 1852 letter to Otto Jahn: "It is ... a pity that, by a too super-abundant productiveness, he has necessarily weakened himself, and has not gone on further on the road of his first Sonata (Op. 7, A-flat major) and of other works of that period, which I rate very highly, as compositions of importance, beautifully formed and having the noblest tendency." In "Men, Women and Pianos" Arthur Loesser describes Czerny's music as "without depth, intensity, or wit, but always smooth and pretty and rather ear-tickling when played fast ... endless variety of patterns and endless monotony of import."