Listen to Piano Sonata No. 16 in G Major, Op. 31 No. 1: III. Rondo - Allegretto online. Piano Sonata No. 16 in G Major, Op. 31 No. 1: III. Rondo - Allegretto is an Instrumental language song and is sung by Maria Grinberg. Piano Sonata No. 16 in G Major, Op. 31 No. 1: III. Rondo - Allegretto, from the album Beethoven: Piano Sonatas Nos. 15, 16 & 17, was released in the year 2006. The duration of the song is 6:28. Download Instrumental songs online from JioSaavn.