De Wall will slip into the role of Lauren as Annaleigh Ashford departs the show.
Financial and marital crises are at the center of Beck Lee's new dark comedy.
Sam Harris and Brenda Braxton were also on hand to perform from their future shows.
The song will be featured in Ashford's one-woman show, Lost in the Stars, at 54 Below.
Replacements are named as Tony nominees Stark Sands and Annaleigh Ashford prepare to depart the cast.
The Tony nominee brings her vocal stylings to the Broadway nightspot.
Director/choreographer Jerry Mitchell was also honored.
Casting changes have been announced for the 2013 Tony Award-winning Best Musical.
Broadway stars will sing to commemorate Spinal Cord Injury Awareness Month.