Calvin Harris and Rihanna's new single, "This Is What You Came For" has arrived and if you were listening to Dermot and Dave earlier you will have heard it. They previously worked together on the 2011 single "We Found Love". Since then Calvin Harris has become one of the most successful and well-paid DJs in the world, as well as a festival headliner in his own right. Just last weekend he was joined on stage by Rihanna as he closed this year's Coachella in California.