Listen to Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": I. Allegro online. Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": I. Allegro is an English language song and is sung by Grober Berlin Rundfunk Orchester, Artur Rother and Walter Gieseking. Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": I. Allegro, from the album Best of Classical Music, was released in the year 2014. The duration of the song is 19:09. Download English songs online from JioSaavn.