We saw Lady Gaga and Elton John perform together at the Grammys this year, and it was one of the most amazing things we’ve ever seen. Lucky for you – Billboard.com is giving away 2 pairs of tickets to see Gaga and Elton perform next week (Thurs, May 13th) at the exclusive Rainforest Benefit at Carnegie Hall! Fans can go here to enter one time each day until Monday. Good luck!