Listen to Cello Sonata No. 2 in F Major, Op. 99: IV. Allegro molto online. Cello Sonata No. 2 in F Major, Op. 99: IV. Allegro molto is an Instrumental language song and is sung by Gustav Rivinius and Paul Rivinius. Cello Sonata No. 2 in F Major, Op. 99: IV. Allegro molto, from the album IX International Tchaikovsky Competition, 1990. Winners (Live), was released in the year 1990. The duration of the song is 4:34. Download Instrumental songs online from JioSaavn.