R&B singer Jason Derulo has knocked Simon Cowell's star-studded cover of R.E.M.'s EVERYBODY HURTS off the top of the U.K. pop chart.
Derulo's second single In My Head debuts at number one, while the music mogul's Helping Haiti track, which features Mariah Carey, Leona Lewis and Miley Cyrus, tumbles to number nine.
Singer Florence Welch and British rapper Dizzee Rascal remain in second place with You Got The Dirtee Love and Rihanna's Rude Boy is at three.
Meanwhile, Lady Gaga's The Fame has returned to number one in the U.K. album chart after 59 weeks on the countdown.
The soundtrack to hit musical TV show Glee drops to second position and Alicia Keys' The Element of Freedom climbs to third place.