This is basically a melding of Punk Rock and Rockabilly with a little swing and some ska thrown in. It usually has a standing bass, some kind of horn section, drums and guitar (accoustic and/or electric).

The two most well-known (relatively speaking) bands of this genre are Royal Crown Revue and the Amazing Crowns, formerly the Amazing Royal Crowns. Live shows generally comes off more like a ska show than street punk or pop punk but results vary.