Miley Cyrus Pharrell Williams David Guetta Little Mix Ed Sheeran Enrique Iglesias Cheryl 5 Seconds of Summer Calvin Harris Ellie Goulding The Vamps Jessie J Iggy Azalea Rita Ora Foxes Clean Bandit Ella Henderson Austin Mahone Duke Dumont Union J Kiesza Rixton Specijess Glynne Charli XCX Nathan Sykes DJ Cassidy Kelli-Leigh Jax Jones Marvin Humes