Kanye West is the only artist whose performance at the 12-12-12 Hurricane Sandy benefit does not feature on the compilation album, with sources claiming the rapper was "unhappy" with his performance.
The 'Mercy' rapper performed at the charity event on December 12 alongside the likes of The Rolling Stones, Bon Jovi, Bruce Springsteen and Alicia Keys. Columbia records have put together a live album of all the performances that took place during the concert, however, it appears that Kanye is the only artist not included on the album.
Kanye West is believed to "unhappy" with his performance at the Hurricane Sandy benefit (WENN)
According to The Hollywood Reporter, a Columbia representative has refused to comment on the tracklisting, while Billboard reports that the decision not to take part in the album came from Kanye's camp, although they failed to specify whether it was for personal or legal reasons.
Other sources have told the website that it was possibly down to Kanye's need for perfectionism, and claim the rapper most likely wasn't pleased with his performance.
Meanwhile, further speculation suggests that the various samples of other tracks in Kanye's music meant the clearances wouldn't come through in time for the album's release.
However, a publishing source claims this wouldn't be an issue considering the enormity of the project.
The 12-12-12 The Concert for Sandy Relief album was released on December 18 and is expected to sell between 125,000 and 150,000 units in its first week.