Étude No. 19 in C-Sharp Minor, Op. 25 No. 7 (Live), Etude No. 21 in G-Flat Major, Op. 25, No. 9, "Butterfly's Wings"

Chopin: Piano Favourites, Vol. 2,1 min, 18 secs

• Étude No. 19 in C-Sharp Minor, Op. 25 No. 7 (Live), Etude No. 21 in G-Flat Major, Op. 25, No. 9, "Butterfly's Wings"