Listen to Rachmaninoff: Piano Concerto No.2 in C minor, Op.18 - 1. Moderato online. Rachmaninoff: Piano Concerto No.2 in C minor, Op.18 - 1. Moderato is an Unknown language song and is sung by Sir Clifford Curzon, London Philharmonic Orchestra and Sir Adrian Boult. Rachmaninoff: Piano Concerto No.2 in C minor, Op.18 - 1. Moderato, from the album Inspiration: Rachmaninoff, was released in the year 2021. The duration of the song is 10:41. Download Unknown songs online from JioSaavn.