LONDON American songwriter Jason Derulo went straight in at the top of the British charts on Sunday with his second single "In My Head," the Official Charts Company said.
The 20-year-old from Miami, who composed his first song at the age of eight and has written for several R'n'B stars including P.Diddy, Lil Wayne and Sean Kingston, was discovered on social networking site MySpace.
His debut single "Watcha Say," which peaked at number three in the British charts, sold 5 million copies worldwide.
British singer Ellie Goulding was another new entry at number four, with her second single "Starry eyed," while girl group the Sugababes entered at number seven with "Wear my kiss."
Rihanna's "Rude boy" climbed three places to number three, while British boyband JLS's "One shot" re-entered the top ten in tenth place, up from number 14 last week.
In the album charts, Lady Gaga's multi-platinum album "The Fame," which spent four weeks at number one in April last year, reclaimed the top spot.
Marina and the Diamonds' "The Family Jewels" was a new entry in the album charts at number five, while Courteeners' "Falcon" went in at number six.
American country music star Johnny Cash was a new entry in ninth place with the latest in a series of posthumous releases, "American 6 - Ain't no grave."
(Reporting by Kylie MacLellan)