The Poker Face star has teamed up with songwriting legend Diane Warren to compose new track Til It Happens To You, which features in a documentary called The Hunting Ground, about rape on U.S. college campuses.

The song is accompanied by a harrowing video, shot by Twilight director Catherine Hardwicke, which depicts scenes of violence against women, and Gaga hopes the project shines a light on sex attacks and the problems facing survivors.

In a series of posts on, she writes, "Diane Warren & I made Til It Happens To You for people all over the world who suffer from painful life experiences... We hope u feel our love & solidarity through the song & perhaps find some peace in knowing u r (you are) not alone through this film... A portion of proceeds from sales of the song will be donated to orgs (organisations) helping survivors."