Listen to Ravel: Piano Concerto in G Major, M. 83: II. Adagio assai online. Ravel: Piano Concerto in G Major, M. 83: II. Adagio assai is an Unknown language song and is sung by Martha Argerich, Berliner Philharmoniker and Claudio Abbado. Ravel: Piano Concerto in G Major, M. 83: II. Adagio assai, from the album 50 Piano Masterworks, was released in the year 2015. The duration of the song is 9:05. Download Unknown songs online from JioSaavn.