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 English language song and is sung by Mozart Festival Orchestra, Alberto Lizzio and Svetlana Stanceva. Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai, from the album Top 200 Classics, Vol. 2: The Rest of the Very Best of Classical Music, was released in the year 2013. The duration of the song is 7:07. Download English songs online from JioSaavn.