VIDEO: Lady Gaga, Elton John, Sting & Springsteen "Don't Stop Believin' "

The roof was raising last night at the famous Carnegie Hall in NYC. Lady Gaga took the stage with Sir Elton John, Sting, Bruce Springsteen, Debbie Harry and Dame Shirley Bassey for an incredible performance of Journey's hit "Don't Stop Believin'. " The A-list musicians performed live last night for a select audience at the Almay Concert to celebrate The Rainforest Fund's 21st Birthday.

Gaga moved across the stage quite well despite her crazy, "heel-less" platforms.