Listen to Mozart: Piano Concerto No. 6 in B-Flat Major, K. 238 - 3. Rondeau. Allegro online. Mozart: Piano Concerto No. 6 in B-Flat Major, K. 238 - 3. Rondeau. Allegro is an Unknown language song and is sung by Mitsuko Uchida, English Chamber Orchestra and Jeffrey Tate. Mozart: Piano Concerto No. 6 in B-Flat Major, K. 238 - 3. Rondeau. Allegro, from the album In the Mood for Mozart, was released in the year 2021. The duration of the song is 7:34. Download Unknown songs online from JioSaavn.