Elder will perform at the Nov. 16 concert, and Oyen and Zadek will appear at the Nov. 14 concert.
The band will feature David Ciquegrana, Ben Meadors and Dan Berkery.
Here's how the evening is billed: "Come party with some of Broadway's best as we celebrate all the hilarious things that make us the weirdos we pretend so desperately not to be! Join us for an immersive night of new rock 'n roll theatre tunes, games, stories and an OPEN BAR! Uncool: the Party promises to be a night you won't forget... unless you really utilize that open bar."
CAP21 is located at 18 W. 18th Street (between 5th and 6th Avenue) on the 6th floor. Tickets are $25 and include an open bar. For more information and tickets, click here.