Last night, Idina Menzel reunited with her Rent costar Anthony Rapp and the rest of the cast of Broadway's upcoming If/Then to preview the musical at a special fan concert at The Cutting Room. See some of the event's most exciting moments, and hear clips from the new Tom Kitt/Brian Yorkey score in the videos below.

Anthony Rapp and Idina Menzel perform "Some Other Me."

James Snyder and Idina Menzel sing "Here I Go."

LaChanze and the cast in "It's a Sign."

And here's a longer cut of "Here I Go."

For tickets and more information, click here.