Listen to Symphony 1 in B-Flat Major: III. Allegro online. Symphony 1 in B-Flat Major: III. Allegro is an English language song and is sung by Barbara Tillmann and Jan Kolnař. Symphony 1 in B-Flat Major: III. Allegro, from the album Baroque Concert, was released in the year 1993. The duration of the song is 2:16. Download English songs online from JioSaavn.