Listen to Piano Concerto No. 9 in E-Flat Major, K. 271: I. Allegro online. Piano Concerto No. 9 in E-Flat Major, K. 271: I. Allegro is an English language song and is sung by Lithuanian Chamber Orchestra, Georg Mais and Eric Davoust. Piano Concerto No. 9 in E-Flat Major, K. 271: I. Allegro, from the album The Greatest Hits: Wolfgang Amadeus Mozart, was released in the year 2015. The duration of the song is 10:08. Download English songs online from JioSaavn.