Listen to Mozart: Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai online. Mozart: Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai is an Unknown language song and is sung by Mitsuko Uchida, English Chamber Orchestra and Jeffrey Tate. Mozart: Piano Concerto No. 21 in C Major, K. 467: III. Allegro vivace assai, from the album Mozart in the Car, was released in the year 2021. The duration of the song is 6:33. Download Unknown songs online from JioSaavn.