Listen to Variations on a Theme (Rachmaninoff) online. Variations on a Theme (Rachmaninoff) is an Instrumental language song and is sung by Music for Dog's Ears, Dog Music and Sleeping Music For Dogs. Variations on a Theme (Rachmaninoff), from the album Dog Music: Classical Piano Music For Dogs, Music For Pets and Dog Sleeping Music, Vol. 2, was released in the year 2018. The duration of the song is 2:05. Download Instrumental songs online from JioSaavn.