Originalno: Thirty New Studies In Technics, Op. 849. 4 and 5-note chords spanning more than an octave. Carl Czerny. Piano Method sheet music.
Prevod: Trideset novih študij v tehniki, op. 849. Piano Metoda note. Piano Solo note. Napredno. Trideset novih študij v tehniki, op. 849. 1791-1857.