Listen to Allegretto in C Major, Op. 60: No. 22. Allegretto online. Allegretto in C Major, Op. 60: No. 22. Allegretto is an English language song and is sung by Peter LaVine. Allegretto in C Major, Op. 60: No. 22. Allegretto, from the album Matteo Carcassi: Opus 60, was released in the year 2008. The duration of the song is 3:05. Download English songs online from JioSaavn.