David Guetta has sold over 40 million singles, he's world's most followed DJ producer on social media, and the most downloaded DJ ever. French DJ and music producer has dominated the dance music scene for decades. The BBC's Lucy Hockings gained an exclusive interview with him at the Cannes Lions festival which celebrates achievements in technology, advertising and innovation. She started by asking him about Taylor Swift and Apple Music after the company bowed to her demands that artists should be paid royalties during their three-month trial period. Subscribe to BBC News HERE bit.ly/1rbfUog Check out our website: www.bbc.com/news Facebook: www.facebook.com/bbcworldnews Twitter: www.twitter.com/bbcworld Instagram: instagram.com/bbcnews