Listen to Harpsichord Concerto No. 6 in F major, BWV 1057: III. Allegro assai online. Harpsichord Concerto No. 6 in F major, BWV 1057: III. Allegro assai is an Instrumental language song and is sung by Sviatoslav Richter, Marina Vorozhtsova, Konstantin Mikhailov, Yuri Nikolaevsky and Moscow Conservatory Chamber Orchestra. Harpsichord Concerto No. 6 in F major, BWV 1057: III. Allegro assai, from the album Sviatoslav Richter 100, Volume 42 (Live), was released in the year 2015. The duration of the song is 5:34. Download Instrumental songs online from JioSaavn.