WU-TANG CLAN SELLS ONE ALBUM ... FOR MILLIONS!!!!

Wu-Tang Clan ain't as crazy as you thought -- they just sold a single top secret album for more than $1 MILLION, and what IS crazy is ... the buyer can't share the music publicly!!

You'll recall the Wu announced it had spent 6 years recording a double album called "Once Upon a Time in Shaolin" ... and would auction it off. Not a copy, but THE only album. Well, Forbes says the bizarre plan worked -- it sold at auction for a "price in the millions."

The American buyer wants to remain anonymous, like the record itself.

Part of the deal is he or she must wait 88 years to release the 31 cuts to the public -- which means RZA, GZA, Raekwon, Method Man et al. will NEVER hear the music played in a club or on the radio. On the plus side ... they'll probably die rich.

"Diversify your bonds, bitches!"

"Invest in the brand!"