Aerosmith star Steven Tyler, Slash and Julian Lennon have joined forces to cover songs by Sting and The Police for a new child slavery awareness album.

Set Them Free will also feature tracks recorded by Journey's Neal Schon and Arnel Pineda, Heart, Glenn Hughes and En Vogue.

Proceeds from sales of the compilation will benefit Rock Against Trafficking, a new nonprofit group dedicated to raise awareness about child slavery worldwide.

Reports suggest many of the stars on the record will appear at a concert in the U.K., which is being planned for later this year (14).

Guitarist Schon, who recorded the Police's Synchronicity Ii with bandmate Pineda for the album, tells, "All kinds of artists are on this record... Hopefully (there will be) a live show that will be filmed."