Noun
English Wikipedia has an article on:psychobillyWikipedia
psychobilly (uncountable)
(music) A genre of popular music, blending rockabilly with punk rock, that has grotesque or humorous lyrics which often draw heavily on the imagery of 1950s science fiction and horror films.
Informal training In other genres, such as blues, rockabilly, and psychobilly, the pedagogical systems and training sequences are not as formalized and institutionalized. Source: Internet
In rockabilly and psychobilly, percussively slapping the strings against the fingerboard is an important part of the bass playing style. Source: Internet