Yesterday, Wu-Tang Clan previewed their forthcoming album, Once Upon a Time in Shaolin, the one-of-a-kind record that was recorded secretly and won't be made commercially available. (It'll be manufactured as a single copy and tour through museums and galleries before being sold to the highest bidder.) The short clip of music featured Ghostface Killah and a voice that sounded like a whole lot like Cher.

A representative for Cher has confirmed the collaboration to Rolling Stone, noting that she contributed vocals to two of the album's songs. "She recorded her parts separately, so I don't believe there was direct interaction," the rep said. Rolling Stone also pointed out that the collaboration was mentioned on the album's website, which teases "special guest appearances by Bonnie Jo Mason"—the pseudonym that Cher released her first solo single under in 1964.

Cher's lyric on the snippet? "Wu-Tang, baby. They rock the world." You can listen to it below in a video released by Forbes, who sent a writer to Marrakesh to preview the album in person.