Cher has contributed some vocals to Wu-Tang Clan's next album.

The rap collective are releasing 'The Wu - Once Upon a Time in Shaolin' soon - but only one copy is being made.

The hope is that the unique record will tour around art galleries, museums and festivals before being bought by a bidder.

A rep for Cher told Rolling Stone that the veteran singer is taking part in the project, saying:

"She recorded her parts separately, so I don't believe there was direct interaction."

The record meanwhile will feature 31 songs and come in the form of a double album.

The public will be able to listen to the studio effort via headphones when it is toured around the world.

Watch Cher in action below: