Will Smith and Ludacris team up for Africa concert

Will Smith and Ludacris have signed up to headline an exclusive concert to celebrate the launch of cable network MTV Base - MTV's first pan-African music channel.

MTV Base 100th Live! Will also feature performances from African artists Lebo Mathosa, Mandoza and Seun Kuti.

The open-air concert, which will also mark the unveiling of MTV's 100th channel worldwide, will take place on April 20 in Johannesburg, South Africa, playing to an audience of up to 10,000 fans. Highlights of the show will air across the MTV network in May.