Listen to I. Allegro online. I. Allegro is an English language song and is sung by Orchestre De La Suisse Romande, Armin Jordan and Josef Bulva. I. Allegro, from the album Beethoven: Piano Concerto No. 5 & Egmont and Coriolan Overtures, was released in the year 1999. The duration of the song is 19:57. Download English songs online from JioSaavn.