Listen to Piano Concerto No. 2 in A Major, S. 125: I. Adagio sostenuto assai online. Piano Concerto No. 2 in A Major, S. 125: I. Adagio sostenuto assai is an English language song and is sung by Claudio Arrau. Piano Concerto No. 2 in A Major, S. 125: I. Adagio sostenuto assai, from the album Discover: Liszt, was released in the year 2014. The duration of the song is 7:34. Download English songs online from JioSaavn.