Psychobilly is a rock music fusion genre that fuses elements of rockabilly and punk rock. It's been defined as "loud frantic rockabilly music", it has also been said that it "takes the traditional countrified rock style known as rockabilly, ramp[ing] up its speed to a sweaty pace, and combin[ing] it with punk rock and imagery lifted from horror films and late-night sci-fi schlock,... [creating a] gritty honky tonk punk rock."
The Cramps are considered progenitors of psychobilly.
The Meteors are considered the first definitive psychobilly band.
Demented Are Go's singer's stage blood make-up is an example of the horror-film schtick some psychobilly bands adopted.
The influential German band Mad Sin in 2008. From a psychobilly fashion perspective, note the bassist's red-dyed pompadour and the guitarist on the right's crop cut sides.
Horror punk is a music genre that mixes punk rock and 1950s-influenced doo-wop and rockabilly sounds with morbid and violent imagery and lyrics which are often influenced by horror films and science fiction B-movies. The genre was pioneered by the Misfits in the late 1970s and early 1980s. Subsequent bands formed in the Misfits' wake like Mourning Noise, the Undead and Samhain, solidifying horror punk's first wave. In the late 1990s and early 2000s the genre gained attention through the reunion of the Misfits and success of groups like AFI, Son of Sam and the Murderdolls. This popularity continued to the modern day with Blitzkid, Calabrese and Creeper.
The Cramps, a key influence on the development of horror punk
Davey Havok, vocalist for AFI and Son of Sam