Listen to Cello Concerto in C Major, RV 400: III. Allegro non molto online. Cello Concerto in C Major, RV 400: III. Allegro non molto is an English language song and is sung by Mario Brunello and L'Arte dell'Arco. Cello Concerto in C Major, RV 400: III. Allegro non molto, from the album Vivaldi: Cello Concertos, was released in the year 2009. The duration of the song is 2:26. Download English songs online from JioSaavn.