Psychobilly is a genre generally described as a mix between punk rock and rockabilly. It was born in the early 1980s in the United Kingdom, before spreading to Europe and North America, South America and Asia. Psychobilly is often characterized by lyrical references to science fiction, horror and exploitation films, violence, lurid sexuality, and other topics generally considered taboo, though often presented in a comedic or tongue-in-cheek fashion. Psychobilly bands and lyrics usually take an apolitical stance, a reaction to the right- and left-wing political attitudes which divided other British youth cultures. It is often played with an upright double bass, instead of the electric bass which is more common in modern rock music, and the hollowbody electric guitar, rather than the solid-bodied electric guitars that predominate in rock. Many psychobilly bands are trios of electric guitar, upright bass and drums, with one of the instrumentalists doubling as vocalist.