Listen to Cello Sonata, Op. 6: II. Andante ma non troppo online. Cello Sonata, Op. 6: II. Andante ma non troppo is an Instrumental language song and is sung by Alexei Zybtsev and Sviatoslav Knushevitsky. Cello Sonata, Op. 6: II. Andante ma non troppo, from the album Sviatoslav Knushevitsky, Cello, was released in the year 1993. The duration of the song is 9:39. Download Instrumental songs online from JioSaavn.