Music on the Square welcomes Appalachian Trail to the Jonesborough courthouse steps tonight at 7. One of the longest established bluegrass bands anywhere, AT has seen members Linda Lay, Carson Cooper, Adam Steffy, Becky Buller, Glen Rose and Tim Laughlin. Their newest member, Vickie Austin, has one of the sweetest voices on the road today. Information: http://www.musiconthesquare.com
Blue Moon Dinner Theatre, 215 E. Main St., presents its first original interactive murder mystery “The Creature from Fifty Fathoms” tonight and Saturday. Doors open at 6 p.m.; dinner is served at 6:30; and the show starts at 7:30. Tickets: 232-1350 or visit http://www.bluemoondinnertheatre.com
Johnson City Community Theatre’s run of “Jerry’s Girls” opens tonight at 8 and continues Saturday at 8. This musical revue features the tunes of Jerry Herman, including songs from “Mame” and “Hello Dolly!” Tickets: http://www.jcct.info or 926-2542. The theater is located at 600 E. Maple St.
Galaxy Lounge, 216 E. Main St., hosts a Umoja Festival After-Party Event Saturday at 11 p.m. with Jae Marie performing live with special guest JaPoet. DJ Sterl the Pearl will be spinning all night long. Information: 232-0975