Listen to Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai online. Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai is an Instrumental language song and is sung by Emil Gilels, Rudolf Barshai and Moscow Chamber Orchestra. Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai, from the album Mozart & Haydn: Piano Concertos, was released in the year 2013. The duration of the song is 6:07. Download Instrumental songs online from JioSaavn.