The crowd's initial silence quickly gave its place to a standing ovation, prompting Senegalese singer Youssou N'Dour to storm up on stage and congratulate him.

CNN: Somali rapper K'naan makes songs in the key of love

She recently broke up with her long-term boyfriend, N'Sync singer Justin Timberlake, and at the same time has had to cope with her parents separating.

BBC: Spears to take sabbatical

Take That's Gary Barlow, pop singer Kelly Rowland and Tulisa Contostavlos of N-Dubz have joined the panel.

BBC: The return of the X Factor