Adam Lambert / Alicia Keys / Britney Spears / CLMD / Gossip / Katy B / Little Mix / Miike Snow / Rita Ora / Rebecca Ferguson / Sia / Various Artists / Alexandra Burke / Cher Lloyd / Chipmunk / JLS / Magnetic Man / Mark Ronson / The Script / Usher / The Business Intl. / A$AP Rocky / Chris Brown / Dev / Flo Rida / John Legend / Mike Posner / will.i.am