Pearl Jam and Maroon 5 are among the bands who have donated tracks to a new music initiative to benefit eco-friendly causes.
The rockers join Jack Johnson, Bonnie Raitt and the Zac Brown Band in lending exclusive music to the Patagonia Music Collective website, which will offer fans more than 20 songs for $0.99 (£0.62).
After the launch on Tuesday (01Mar11), a new song will be made available every week, with proceeds going to the environmental cause of the artist's choice.
Pearl Jam are offering up their track Oceans, with earnings to benefit marine life charity Conservation International, and guitarist Stone Gossard is hopeful "there's an opportunity for some real change to happen".