Guests also included Lauren Pritchard, Drew Gasparini, and more.
The fictional musical takes the stage at 54 Below on Sunday and Monday.
National audiences will get a chance to sample the musical before it closes on January 5.
Guests also included Tony Danza, Alan Cumming, and Krysta Rodriguez.
They were joined by their castmates and producers to end the day of stock trading.
The score of the Tony Award-winning (fictional) musical will be sung on December 9 at 54 Below.
The free outdoor concert will take place, rain or shine, this Friday.