This collaborative album by Paul McCartney and DJ/producer Freelance Hellraiser (a.k.a. Roy Kerr) was released in 2005 as a limited-edition double vinyl LP, plus as a download that was reissued in 2012. Kerr was known as a mash-up artist, someone who remixes two or more contrasting musical works and invents something new in the process. Kerr opened for McCartney’s 2004 tour, performing a half-hour set of McCartney’s music remixed into sometimes unrecognizable forms and sometimes modestly reworked versions. The results gave McCartney a new audience of fans who were more dance-oriented. The more famous songs here—“Maybe I’m Amazed,” “Live and Let Die,” “Coming Up”—generally have enough of their bones kept in place for fans to recognize them and sing along, while the lesser-known tunes provide a chance for Kerr to run wild and free. While this album may be shocking to some, McCartney has always been a fan of the avant-garde.