Paul McCartney and Kanye West

Sir Paul McCartney and Kanye West at the 51st Annual GRAMMY Awards at the Staples Center on February 8, 2009 in Los Angeles, California. 

Kevin Mazur/WireImage

Kanye West reportedly previewed 20 new songs at a London club back in July, following his set at the Wireless Festival.

One of the songs that he previewed sounds like it may be the track that's rumored to feature Paul McCartney, "Piss On Your Grave."

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Sources confirmed with Billboard that Paul McCartney will be featured on 'Ye's upcoming seventh studio album, expected to drop this fall.