Here in Pocatello there's quite an acoustic scene. "Pub 'n' Suds" has Celtic on Mondays and other folk/acoustic venues during the rest of the week -- you can drink a beer, listen to music, and wash your clothes all at the same time (it's also a laudromat), and they have decent food, too.

There's an old-time fiddlers group, groups for jazz, blues, and barbershop. There's true Western (not the C-W stuff, but you can get that too). There's even a couple of bagpipers (Scottish). And of course there are a number of choral groups which encompass styles from R&B to gospel to church. There's even a couple of skat singers.

We don't have any cajun or klezmer as far as I know, though.

And 'way off in the hills, off where the native golfs fly over the fence, there's a lonely folk trumpter. He's armed, so don't criticize his playing too much.