Philadelphia band Sadgiqacea has only two members, drummer Fred Grabosky and guitarist Evan Schaefer. But False Prism, their excellent full-length debut due May 7 on Candlelight, indicates that a limited membership doesn’t entail diminished ideas or abilities. They bridge thrash and doom, black metal and drone, field recordings and power metal into often-seamless long-form pieces. At six minutes, the record’s title cut is its shortest, but it’s an apt demonstration of the duo’s versatility.

They start with a sustained and blackened sprint, downshifting toward the middle to retrench with subdural distortion and a heavy, patient march. As the song phoenixes toward its end, Sadgiqacea delivers an intriguing chimera, where serrated, sinister vocals are engraved over an instrumental that teases at but never delivers a post-rock climax. Spend some time sounding out Sadgiqacea; with a debut this interesting, it’s a name you’ll encounter again in years to come.