Green Day are to release a new download single to raise money for charity.
Their cover of the John Lennon classic â€˜Working Class Heroâ€™ will be released exclusively through iTunes tomorrow (May 1).
All the proceeds will go towards helping those people blighted by the troubles in Darfur.
The track merges Lennonâ€™s original vocals with Billie Joeâ€™s contribution and also will appear on the forthcoming Amnesty International album â€˜Instant Karma: The Campaign To Save Darfurâ€™ released on May 25
As previously reported, also appearing on the album are REM, Snow Patrol, Aerosmith, U2 and Black Eyed Peas.