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 English language song and is sung by Wilhelm Kempff and Paul van Kempen. Piano Concerto No. 5 in E-Flat Major, Op. 73 - "Emperor": II. Adagio un poco mosso, from the album Beethoven: Piano Concertos & Appassionata, was released in the year 2010. The duration of the song is 7:45. Download English songs online from JioSaavn.