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.