Some Minnesota Bands:

Front Porch Swingin' Liquor Pigs

Trampled by Turtles

Two Many Banjos

Pert Near Sandstone (Sandstone is a town in Minnesota)

Not from Minnesota, but I once met a busker who said he was a member of Shoot the Hostages. Oddly enough, the guy played good Irish fiddle, but you don't hear that in the band.