Prelude and Fugue No.21 in B-flat major, BWV 866:1. Praeludium

歌曲	Prelude and Fugue No.21 in B-flat major, BWV 866:1. Praeludium
歌手	Rosalyn Tureck
专辑	J.S. Bach: The Well-Tempered Clavier, Book 1