Izvornik: Piano Etudes Level 9. Novelette, Opt. 45, No. 17. Keith Snell. Piano Method sheet music. Piano Solo sheet music. For piano. Level 9.
Prijevod: Klavir Etide Razina 9. Istaknuti skladatelji su Czerny, Beyer, Berens, Kunz, Kuhler, Gurlitt, Streabbog, i mnogi drugi.