Arone Dyer and Aron Sanchez play the sui generis home-built instruments that give their two-person band its name: re-spectively, a modified six-string baritone ukelele and a hybrid guitar/bass made of scrap metal, along with a battery of comparably crafty foot-triggered percussion. That may sound like so much gimmicky novelty, and it does engender some rather specific aesthetic parameters. But it’s really just a starting point for the inventiveness and nonconformist self-sufficiency that permeate the duo’s work — particularly their sparse, spar-ky songwriting, which was impressive on their earlier outings and comes into fuller flower on the riveting new General Dome (Brassland). Making potent use of repetition and polyrhythmic overlay, pitting Dyer’s heartily melodic vocals against a barrage of ritualistic stomping and maintaining a punkish intensity that manages to feel celebratory rather than off-putting, Buke & Gase project a fierce, arty exuberance that evokes Deerhoof and tUnE-yArDs in attitude. But they can’t help sounding like nobody but themselves.

Fri., Feb. 1, 9:15 p.m., $10-$12, with Ahleuchatistas and Norwegian Arms, Johnny Brenda’s, 1201 N. Frankford Ave., 215-739-9684, johnnybrendas.com.