Damien Rice and Philip Glass also add to the soundtrack

Radiohead‘s Thom Yorke has contributed to the soundtrack to a new documentary about the Free Tibet movement.

Called When The Dragon Swallowed The Sun, the documentary is seven years in the making and is about the struggles the movement has had in trying to to free Tibet from Chinese occupation.

The director, Dirk Simon, told Twentyfourbit.com that Yorke has contributed three songs.

According to WhenTheDragon.com Damien Rice and composer Philip Glass will also feature on the soundtrack.

Details of the premiere are expected to be announced shortly.