Britney Spears' husband KEVIN FEDERLINE has laughed off predictions his music career will fail, insisting his heartfelt lyrics will ensure hip-hop success.

The father-of-three is convinced his music will make him famous in his own right, and has even been bottling up his emotions in a bid to pour his feelings into raps.

He says, "I believe that no matter what, if it's real and people feel it, that's what it is, it doesn't matter.

"They'll look past what I look like if they know I'm pouring my soul out on this and I'm serious about it. It's not like I think this is a joke. It's not a joke to me.

"This is my emotion, this is everything, the past two years where I haven't said anything or came out and talked to anybody, I held it all in here so I can do this."