Listen to Cello Concerto: III. Allegro online. Cello Concerto: III. Allegro is an Instrumental language song and is sung by Mstislav Rostropovich, Kirill Kondrashin, Moscow Philharmonic Symphony Orchestra and Moscow Philharmonic Symphony Orchestra. Cello Concerto: III. Allegro, from the album Young Slava, was released in the year 2017. The duration of the song is 5:43. Download Instrumental songs online from JioSaavn.