Listen to I. Allegro - 5 online. I. Allegro - 5 is an English language song and is sung by Württemberg Chamber Orchestra Heilbronn, Jörg Faerber, Martin Galling, Peter Buck, Heinrich Haferland, Johannes Koch, Ulrich Koch and Fritz Ruf. I. Allegro - 5, from the album 66 Bach Masterpieces, was released in the year 2011. The duration of the song is 6:59. Download English songs online from JioSaavn.