Listen to Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso online. Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso is an Unknown language song and is sung by Glenn Gould. Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso, from the album Sing Me to Sleep, was released in the year 2015. The duration of the song is 9:22. Download Unknown songs online from JioSaavn.