Listen to Piano Concerto No. 5 in E-Flat Major, Op. 73: I. Allegro online. Piano Concerto No. 5 in E-Flat Major, Op. 73: I. Allegro is an English language song and is sung by Rudolf Serkin. Piano Concerto No. 5 in E-Flat Major, Op. 73: I. Allegro, from the album Discover Beethoven, was released in the year 2014. The duration of the song is 19:34. Download English songs online from JioSaavn.