Listen to Symphony "B" in B-Flat Major, Hob. I/108: I. Allegro molto online. Symphony "B" in B-Flat Major, Hob. I/108: I. Allegro molto is an Instrumental language song and is sung by Mark Ermler and Bolshoi Theatre Orchestra Chamber Ensemble. Symphony "B" in B-Flat Major, Hob. I/108: I. Allegro molto, from the album Haydn: Symphonies "A", "B", Nos. 1 - 3, was released in the year 1990. The duration of the song is 3:08. Download Instrumental songs online from JioSaavn.