Remember Wu-Tang Clan's Once Upon a Time In Shaolin album? The group spent nine years recording 31 tracks for a special LP, then decided to sell just one copy of it -- for a very high price, of course. It was finally purchased by a private American collector for "millions," according to Forbes. The deal was completed in May, but the contract was finalized only recently. The buyer will get to listen to the album now, but won't have the right to release it publicly for another 88 years. "The Wu-Tang Clan has always been driven by innovation, and this marks another moment in musical history," said co-founder RZA. He added that "we hoped that this concept would inspire debate and new ways of seeing creativity."