Greg Wells is a Canadian musician, record producer and songwriter based in Los Angeles. Wells has songs on over 85 million units sold. He has produced and written with Ella Eyre, Holychild, Adele, Greg Holden, Rufus Wainwright, Twenty One Pilots, Katy Perry, Mayer Hawthorne, OneRepublic, Kelly Clarkson, Pharrell Williams, Theophilus London, Weezer, Kid Cudi, The All American Rejects, LostAlone, Pink, Paloma Faith, Otep, Deftones, Aerosmith, Burt Bacharach, Celine Dion, Crash Test Dummies, Elton John, Jars of Clay, Bry, and the Count Basie Orchestra.