Psychedelic rock was invented in the 1960s by American and British counterculture figures. Arriving in Japan, psychedelic rock took on a different flavour. Previously known for the drug intake of its performers leaving an impact on the hazy, drugged-out music, J-Rock performers tended to be drug-free, or even adamantly anti-drug (for example, Kosugi Takehisa, Haino Keiji, Nanjo Asahito).[/b
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http://www.japaneselifestyle.com.au/culture/j_rock.html