Listen to Piano Concerto No. 20 in D Minor, K. 466: III. Allegro assai (Cadenza by Fischer) online. Piano Concerto No. 20 in D Minor, K. 466: III. Allegro assai (Cadenza by Fischer) is an Instrumental language song and is sung by Edwin Fischer and London Philharmonic Orchestra. Piano Concerto No. 20 in D Minor, K. 466: III. Allegro assai (Cadenza by Fischer), from the album Icon: Edwin Fischer, was released in the year 2010. The duration of the song is 7:30. Download Instrumental songs online from JioSaavn.