The Rainbow Girls describe themselves as “rock n’ roll, folk, world, Americana, funk, psychedelic (and) alternative.” That’s a start.

It’s far from the whole picture, though. Since getting together in 2010 as an acoustic quartet at an open mic night, these four women have built their musical reputation on wide-eyed adventurousness — from spending time busking overseas, to sharing their instruments onstage.

There’s the music, too. The band’s sophomore album opens up with “The Naked Song,” which might have just been a funny riff on disliking clothes if it wasn’t so damn epic — the six-plus minute tune goes back and forth between ’60s garage rock stomp and folksy, harmony-laden dirge. Elsewhere, the girls lament how their favorite rock bands never had female members on “No Girls Allowed” (bonus points here for possibly the prettiest singing of the “F”-word on record), and get rhythmic and worldly on the grooving “Step Down From the Mountain.”

After playing Pickin’ and Paddlin’ at Tumalo Creek Kayak & Canoe in August, the girls are back in town for a show at Volcanic Theatre Pub. If you missed them before, don’t miss them now.

Rainbow Girls, with G-Bots and the Journeymen; 9 p.m. Thursday; $5 plus fees in advance, $10 at the door; Volcanic Theatre Pub, 70 SW Century Drive, Bend; www.volcanictheaterpub.com or 541-323-1881. —Brian McElhiney