Listen to Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondo. Allegro online. Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondo. Allegro is an Unknown language song and is sung by Irena Grafenauer, Maria Graf, Academy Of St Martin In The Fields and Sir Neville Marriner. Mozart: Concerto for Flute and Harp in C Major, K. 299: III. Rondo. Allegro, from the album Mozart in the Car, was released in the year 2021. The duration of the song is 8:19. Download Unknown songs online from JioSaavn.