Book II: Prelude and Fugue No. 21 in B-Flat, Major BWV 890

歌曲	Book II: Prelude and Fugue No. 21 in B-Flat, Major BWV 890
歌手	Sviatoslav Richter
专辑	Bach: Well Tempered Clavier (Books I & II, Complete) LIVE Innsbruck 1973