The members of the Cave Singers began their notable music careers on full tilt, in prog-rock and art-punk outfits like Pretty Girls Make Graves, Murder City Devils and Cobra High. Their transition to the indie folk rock of the Cave Singers is somewhat akin to someone taking a lung-bursting sprint into a freezing body of water, their legs becoming sluggish frigid as the waters begin to lap up around their waist. In the subsequent years, this body has become acclimated to its new environment, and the Cave Singers sound more comfortable than ever creating simultaneously traditional and rousing folk rock. The drums have become a little more restless, the vocals a little more sneering, and the guitars a little more raucous. Inside the Cave Singers teems a punk rock soul.

[The New Frontier Lounge, with Mongrel Blood, 8 p.m., $15, 301 E. 25th St., Tacoma, 253.572.4020]