Listen to Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non-tanto online. Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non-tanto is an English language song and is sung by Consort of London. Brandenburg Concerto No. 6 in B-Flat Major, BWV 1051: II. Adagio ma non-tanto, from the album Bach to Bed: Classical Music to Help Sleep, was released in the year 2014. The duration of the song is 4:59. Download English songs online from JioSaavn.