If/Then stars Idina Menzel and Anthony Rapp dug into their past as original cast members of Rent to raise money for the charity Broadway Cares/Equity Fights AIDS on April 12. After the curtain call at the Richard Rodgers Theatre, the cast auctioned off a chance to join them on stage as they sang Jonthan Larson's Rent anthem "Seasons of Love." Check out the video below to see the winners take center stage with Menzel for a smile-inducing sing-along. P.S. High five to If/Then's Tamika Lawrence for taking the (not-easy-at-all) solo part in the song! How much do we love this cast?