The chat show will also welcome Academy Award nominee Oprah Winfrey that evening.
"The Tonight Show" airs in the New York metropolitan area on NBC, Channel 4, beginning at 11:35 AM ET; check local listings.
Menzel will launch her global concert tour June 20, 2015, at the Board Gais Energy Theatre in Dublin, Ireland. For ticket information visit www.livenation.com and www.idinamenzel.com.