É tude No. 19 in CSharp Minor, Op. 25 No. 7 Live: No. 21 in GFlat Major, Op. 25, No. 9, " Butterfly' s Wings"

Song	Étude No. 19 in C-Sharp Minor, Op. 25 No. 7 (Live): No. 21 in G-Flat Major, Op. 25, No. 9, "Butterfly's Wings"
Artist	Vladimir Ashkenazy
Album	Ashkenazy Plays Chopin, Rachmaninov, Liszt & Prokofiev (1956-1960)