Listen to Book II: Prelude and Fugue No. 21 in B-Flat, Major BWV 890 online. Book II: Prelude and Fugue No. 21 in B-Flat, Major BWV 890 is an English language song and is sung by Sviatoslav Richter. Book II: Prelude and Fugue No. 21 in B-Flat, Major BWV 890, from the album Bach: Well Tempered Clavier (Books I & II, Complete) LIVE Innsbruck 1973, was released in the year 2016. The duration of the song is 8:42. Download English songs online from JioSaavn.