Listen to I. Allegro - 3 online. I. Allegro - 3 is an English language song and is sung by Württemberg Chamber Orchestra Heilbronn, Jörg FaerberPeter Steinkraus, Susanne Lautenbacher, Peter Buck and Martin Galling. I. Allegro - 3, from the album 66 Bach Masterpieces, was released in the year 2011. The duration of the song is 10:52. Download English songs online from JioSaavn.