"Hillbilly music" on speed and whiskey, run through Fender amps. Elvis (circa the Sun Sessions) remains the patron saint, but great music from Gene Vincent, the Burnette Brothers, and others covered the landscape of that era. Its spirit has lived on in later decades, via folks like Robert Gordon, The Cramps, Alan Vega, Brian Setzer, Dave Edmunds, Marxist cartoonist Ray Lowry, and the great Dexter Romweber of Flat Duo Jets.