Most of the time, naming your band for a Nazi-themed exploitation film will not earn you new fans. (Ditto naming your album after an Italian B-movie about devil worshippers.) But when you’re working in a genre as alienating as Ilsa’s—the name comes from the 1975 film Ilsa, She-Wolf of the SS—the cinematic shout-outs probably couldn’t hurt. Then again, as far as extreme metal goes, the D.C. outfit isn’t a bad starter band. That’s not to say Ilsa’s music isn’t heavy: The five piece blends the slow-tempo muck of sludge metal, the compositional complexity of death metal, the apocalyptic theatrics of doom metal, and all the crust you’d expect from a group that appears pretty regularly on the local house-venue circuit. Not enough of a primer? Luckily, the rest of tonight’s bill includes psych metal, thrash metal, and classic-sounding heavy metal—but sadly, no melodic Swedish death metal.

Ilsa performs with Windhand, Natur, Pilgrim, and Midnight Eye at 6:30 p.m. at St. Stephen and the Incarnation Episcopal Church, 1525 Newton St. NW. $10. positiveforcedc.org.