Listen to I. Allegro ma non troppo, un poco maestoso online. I. Allegro ma non troppo, un poco maestoso is an English language song and is sung by Theo Adam, Ingeborg Wenglor, Ursula Zollenkopf, Gewandhausorchester Leipzig, Franz Konwitschny, Rundfunkchor Leipzig and Hans-Joachim Rotzsch. I. Allegro ma non troppo, un poco maestoso, from the album Beethoven (Greatest Works), was released in the year 2010. The duration of the song is 17:45. Download English songs online from JioSaavn.