Joan Jett Talks Dave Grohl, Ke$ha Collaborations

Lyndsey Parker
Maximum Performance

On Saturday, September 21 at the iHeartRadio Music Festival in Las Vegas, rock goddess Joan Jett joined pop animal Ke$ha onstage for a spirited rendition of her girl-powered anthem "Bad Reputation." It was the eve of Joan's 55th birthday, but she kept up with Ke$ha, and in fact truly showed many of the iHeart weekend's younger performers how it's done.

But the Ke$ha duet isn't the only collaboration Joan has done lately: Talking backstage to Yahoo Music about her forthcoming album Unvarnished (her first LP in seven years), Joan revealed details about "Any Weather," a new song she wrote with the Foo Fighters' Dave Grohl.

Check out Yahoo Music's chat with rock 'n' roll's ultimate cherry bomb, and watch her iHeartRadio duet with Ke$ha below!