Listen to Concerto in B-Flat Major: Allegro - adagio - Presto online. Concerto in B-Flat Major: Allegro - adagio - Presto is an English language song and is sung by Gert Oost. Concerto in B-Flat Major: Allegro - adagio - Presto, from the album A Musical Anthology of the Northern Netherlands, was released in the year 2005. The duration of the song is 9:35. Download English songs online from JioSaavn.