Both Hovercraft and Bardo Pond play long, long, long songs that shift between languor and raucousness at the pop of a pill. Judging from Hovercraft’s Akathisia, the Seattle trio’s drugs of choice are anti-psychotics. The CD booklet includes the diagnostic criteria for schizophrenia, and psychopharmacological textbook excerpts placed between explanations of musical forms and sound—indicators that Hovercraft hopes its music produces hallucinations and delusions. (Personally, I just felt a little itchy.) Bardo Pond’s members probably prefer to smoke their medicine, and if they keep producing albums like last year’s Amanita (an album that generates truly incoherent daydreaming), then I’m their pusher. Both bands play with By Divine Right at 8:30 p.m. at the Black Cat, 1831 14th St. NW. $6. (202) 667-7960. (CP)