Listen to Piano Concerto No. 5 In E-Flat Major, Op. 73 "The Emperor": I Allegro online. Piano Concerto No. 5 In E-Flat Major, Op. 73 "The Emperor": I Allegro is an English language song and is sung by Haiou Zhang & The Slovak Sinfonietta. Piano Concerto No. 5 In E-Flat Major, Op. 73 "The Emperor": I Allegro, from the album Beethoven Piano Concerto No. 5 "The Emperor", was released in the year 2010. The duration of the song is 20:19. Download English songs online from JioSaavn.