The young singing actor will play the intimate nightspot Oct. 19 at 11:30 PM. His special guests will include Spring Awakening's Jonathan Groff and Alice Lee and Hair's Kacie Sheik as well as Catherine Brookman and Starr Busby.
Laura Pietropinto will direct the evening with musical direction by Kimberly Grigsby.
Karr was also seen Off-Broadway in Everyday Rapture.
Tickets, priced $12, are available by visiting www.joespub.com or by calling (212) 967-7555. Joe's Pub is located within the Public Theater at 425 Lafayette Street.