While fans may be excited over the leak of Kanye West‘s ‘Mama’s Boy‘ track, he’s none too happy about it and is threatening to sue.

Island Def Jam released a statement saying a version of the song that turned up online is not approved by West; someone obtained a vocal track and made the version that appeared online. “Needless to say, measures are being taken to identify and prosecute the persons responsible for leaking this material.”

“The version of the Kanye West recording ‘Mama’s Boy’ that arrived on blog sites earlier this week is entirely bogus and unsanctioned, and violates the artist’s creative intentions. As is often the unfortunate case, an unknown party or parties got a hold of Kanye West’s vocal track and added their own soundbed to it, effectively and falsely releasing it as a Kanye West track from the ‘My Beautiful Dark Twisted Fantasy’ sessions. The result in no way resembles the final song Kanye West intended his fans to hear, and he is deeply disappointed that one of the most personal, meaningful and special songs he has ever written would reach people in this way.”

Given the personal subject matter, it’s no surprise the rapper-producer is so upset.

The track is obviously, not Kanye-worthy. Yet, it fooled almost everyone.

video: YouTube