M.I.A, La Roux and Alicia Keys, among others, are all believed to be included on Kanye West's 'My Beautiful Dark Twisted Fantasy'.
The 'Runaway' rapper announced his fifth album will be called 'My Beautiful Dark Twisted Fantasy' earlier this week, and while Kanye has previously confirmed certain stars will appear - including Jay-Z, RZA and Beyonce Knowles - it seems his guest list is much longer than previously thought.
One track which has already been leaked, 'Lost In The World', features Justin's vocals.
Kanye's celebrity album cast could be part of his striving to fill the gap left by 'King Of Pop' Michael Jackson's sudden death last year, a role he sees himself in line to fulfil.
He told the Daily Mirror newspaper: "With the passing of Michael Jackson, I feel a responsibility to bring things to our generation that can inspire and bring real culture to pop culture. I don't sleep anymore thinking how we are going to fill this gap, and create something to inspire on the level he did."
Although Kanye has mentioned a large number of people involved with 'My Beautiful Dark Twisted Fantasy', he lines are blurred between which artists will appear on the commercially released album and who will appear in his G.O.O.D Fridays series, which has so far seen mainly extended and remixed versions of tracks from the albums featuring a number of rappers and producers.
'My Beautiful Dark Twisted Fantasy' will be released on November 22.