Listen to Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto online. Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto is an English language song and is sung by Royal Philharmonic Orchestra, Alexander Ardakov and Sir Alexander Gibson. Rachmaninoff: Piano Concerto No. 2 in C Minor, Op. 18: II. Adagio sostenuto, from the album Big Russian Music Box, was released in the year 2018. The duration of the song is 11:23. Download English songs online from JioSaavn.