The former NSYNC star is collaborating with the Queen Of Pop on her forthcoming album, which is due out in November. Justin confirmed: "I have been working on some new music. But it's not for myself — I'm writing for other people. I’m working on some stuff for Madonna."

Justin headed into a West London studio yesterday with Madge.

He is in the country for a few weeks as he prepares to kick off the UK leg of his current world tour.

Madonna is famous for reinventing herself and this time her album will have a real hip-hop feel. She has lined up a Who’s Who of the genre's megastars, including Timberlake’s producer pal Timbaland to help her achieve R&B credibility.

Hip-hop legend Pharrell Williams is already working on at least four tracks and his fingerprints look set to be all over the new release.

Madge's last offering, Confessions On A Dance Floor, was a massive success, with Brit DJ and producer Stuart Price the main influence on the 2005 album.

There will also be some dancy Price-produced tracks on the new offering and she has also been joined by Chicago house DJ and producer Felix Da Housecat in the studio. A source told me: "Confessions was a worldwide smash — but this will be different once again. The last album was a credible disco record and Madonna wants to give hip-hop the same treatment this time. It’s not all hip-hop though, there are a lot of producers from a lot of genres in there. It could be her most ambitious project yet."

Meanwhile, Madonna has been named as a headliner at the London leg of the Live Earth concerts.

Source: The Sun