Artemis Singers Chicago’s Lesbian Feminist Chorus, which specializes in music written or arranged by women, will celebrate its 30th anniversary. $20 advance, $25 at door. Tickets can be purchased online via www.skokietheatre.com. Tickets by mail, payable to the Skokie Theatre Music Foundation, 7924 N. Lincoln Avenue, Skokie, IL 60077, avoid the online service charge. info@artemissingers.org