Listen to Grave & Presto in B-flat Major for Two Pianos (fragment), K. Anh. 42 (375b) online. Grave & Presto in B-flat Major for Two Pianos (fragment), K. Anh. 42 (375b) is an English language song and is sung by Duo Crommelynck. Grave & Presto in B-flat Major for Two Pianos (fragment), K. Anh. 42 (375b), from the album Fragments & Unfinished Works For Piano, Two Pianos & Piano Four Hands, was released in the year 1991. The duration of the song is 1:55. Download English songs online from JioSaavn.