Kanye West and Paul McCartney might be recording together, according to The New York Post. The Post quotes sources saying that West and McCartney have been secretly working in the studio together on a number of tracks that "could develop into an album"—including one number titled "Piss on My Grave" that's apparently drawn the confusion of Kanye's wife, Kim Kardashian.

Kanye was at McCartney's show in Los Angeles last week, too. His reps declined to comment to the Post, of course.

Improbable? Maybe. Incredible? Obviously. Hold out hope, true believers. Macca did say he wanted to collaborate with Kanye (or Jay Z) as recently as last year...

Read our interview with McCartney from 2012.

If not, McCartney could just settle for playing the piano on "Runaway" in concert: