Listen to Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (Live) online. Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (Live) is an Unknown language song and is sung by Lang Lang, Mariinsky Orchestra and Valery Gergiev. Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto (Live), from the album The 50 Most Essential Classical Music Pieces Ever, was released in the year 2013. The duration of the song is 12:28. Download Unknown songs online from JioSaavn.