Positive Force is back. Actually, the activist group, whose history runs almost parallel to D.C. punk’s, never went away. But its well-chronicled benefit shows seem to have resurged in recent weeks. P-Force has turned St. Stephens Church into the most reliable showcase for new projects by D.C. veterans. To wit: Tonight’s show is bookended by Title Tracks, the retro-minded new outfit of Q & Not U member John Davis, and Authorization, a new project from Black Eyes’ Dan Caldas. Authorization employs post-punk tropes the way another band on the bill, Ecstatic Sunshine, plays with psychedelia. It strips it down to its basics, stretches it into lengthy tone poems, and slowly finds catharsis amid hiss and repetition.

TITLE TRACKS, ECSTATIC SUNSHINE, DELETED SCENES, AND AUTHORIZATION PERFORM AT 7:30 P.M. AT ST. STEPHEN & THE INCARNATION EPISCOPAL CHURCH, 1525 NEWTON ST. NW. $8. (202) 232-0900.