Listen to Keyboard Concerto In B Flat Major, Bwv 982 - 1.Allegro online. Keyboard Concerto In B Flat Major, Bwv 982 - 1.Allegro is an English language song and is sung by Shinji Ishihara. Keyboard Concerto In B Flat Major, Bwv 982 - 1.Allegro, from the album Bach In Musical Box 46 / Keyboard Arrangements Of Concertos Bwv 982 - 983, was released in the year 2010. The duration of the song is 2:21. Download English songs online from JioSaavn.