Listen to Mozart: Piano Concerto No. 23 in A Major, K. 488: II. Adagio online. Mozart: Piano Concerto No. 23 in A Major, K. 488: II. Adagio is an Unknown language song and is sung by Wilhelm Kempff, Bamberger Symphoniker and Ferdinand Leitner. Mozart: Piano Concerto No. 23 in A Major, K. 488: II. Adagio, from the album 50 Piano Masterworks, was released in the year 2015. The duration of the song is 6:01. Download Unknown songs online from JioSaavn.