Listen to I. Allegro moderato - 1 online. I. Allegro moderato - 1 is an English language song and is sung by Stuttgart Pro Musica Orchestra, Rolf Reinhardt and Susanne Lautenbacher. I. Allegro moderato - 1, from the album 20 Basics: Haydn (20 Classical Masterpieces), was released in the year 2015. The duration of the song is 9:43. Download English songs online from JioSaavn.