The jumble of emotions at age 13

Young teenagers in Indiana cope with budding adolescent angst and middle school survival -- especially one newcomer who’s trying to figure out a way to get all the cool kids to come to his bar mitzvah -- in “13,” a world premiere musical comedy by Jason Robert Brown and Dan Elish, directed by Todd Graff. The cast and band are made up entirely of young teens.

“13,” Mark Taper Forum, 135 N. Grand Ave., L.A. Opens 2:30 p.m. Sunday (no evening performance). $55 and $65. (213) 628-2772; www.CenterTheatreGroup.org

* Runs 8 p.m. Tuesdays through Saturdays, 7:30 p.m. Sundays, 2:30 p.m. Saturdays and Sundays. Ends Feb. 18.