Listen to Piano Concerto No. 18 in B-Flat Major, K. 456: III. Allegro vivace online. Piano Concerto No. 18 in B-Flat Major, K. 456: III. Allegro vivace is an English language song and is sung by La Musique de Bébé. Piano Concerto No. 18 in B-Flat Major, K. 456: III. Allegro vivace, from the album Baby, Mozart & Beethoven – Classical Sounds for Baby, Brilliant, Little Child, Relaxing Music, Development of Brain, was released in the year 2017. The duration of the song is 3:13. Download English songs online from JioSaavn.