12 Etudes, Op. 25:Etude No. 21 in G-Flat Major, Op. 25, No. 9, "Butterfly's Wings"

歌曲	12 Etudes, Op. 25:Etude No. 21 in G-Flat Major, Op. 25, No. 9, "Butterfly's Wings"
歌手	Idil Biret
专辑	CHOPIN: Etudes, Opp. 10 and 25