Bruce Springsteen will be back on a stage soon: only this time it won’t be as part of a new tour but as a guest at Sting’s 60th birthday party. The event will be a charity concert held at the Beacon Theatre in New York City on October 1st, featuring other musician-friends of Sting such as Lady Gaga, Stevie Wonder, Rufus Wainwright, Billy Joel or Mary J. Blige.