The impromptu performance, captured on video by If/Then conductor Carmel Dean, followed the April 12 evening show of If/Then, when the cast was accepting donations for Broadway Cares/Equity Fights AIDS.
The If/Then cast (unexpectedly) offered the chance for an audience member to join the company onstage and be serenaded by Menzel, Rapp, Lawrence and others from the new Tom Kitt- Brian Yorkey musical. Two audience members, who bid $4,000 each, agreed to share the prize, and $8,000 in total was raised from the "Seasons of Love" auction.
If/Then, the new musical about a woman starting over in New York City, opened March 30 at the Richard Rodgers Theatre.
Watch "Seasons of Love" below: