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 George Szell, Leon Fleisher and The Cleveland Orchestra. Piano Concerto No. 5 in E-Flat Major, Op. 73 "Emperor": II. Adagio un poco mosso, from the album Absolute Masterworks - Chill, was released in the year 2013. The duration of the song is 8:25. Download Unknown songs online from JioSaavn.