Stephan Moccio (born October 20, 1972) is a Canadian pianist, composer, producer, arranger, conductor and recording artist. He co-wrote and co-produced the two end credit songs for Fifty Shades of Grey and the Fifty Shades of Grey (soundtrack) - Earned It (The Weeknd) and I Know You (Skylar Grey). He also co-wrote Miley Cyrus' single Wrecking Ball from her 2013 studio album Bangerz.