Country star Toby Keith is planning to cross the divide between country music and hip-hop and collaborate with rapper Ludacris.

After Tim Mcgraw's successful hit single with Nelly, OVER + OVER - Keith is sure he and Ludacris can top the charts too.

He says, "Country artists and rap artists have more in common than any other two genres of music. And it's because we write from different streets.

"But at the same time, whatever street I grew up in, however my background is, you get it raw. And it's the same with them."