Trip rock
| Acid rock | |
|---|---|
| Stylistic origins | |
| Cultural origins | Mid-1960s, United States |
| Typical instruments | |
| Derivative forms | |
| Fusion genres | |
| Local scenes | |
| San Francisco Sound | |
| Other topics | |
Acid rock is a loosely defined type of rock music that evolved out of the mid-1960s garage punk movement and helped launch the psychedelic subculture. The term, which derives its name from lysergic acid diethylamide (LSD), is sometimes deployed as a synonym of "psychedelic rock", but it may also refer to a more musically intense subgenre or variation of the psychedelic rock style. Acid rock is generally defined by distorted guitars, lyrics with drug references, and long improvised jams. Distinctions between other genres can be tenuous; it may also encompass certain garage rock, 1960s punk, proto-metal and heavy, blues-based hard rock.
The style may distinguish itself from other psychedelic styles by having a harder, louder, or heavier sound. Developing mainly from the American West Coast, acid rock did not focus on novelty recording effects or whimsicalness as much as subsequent British psychedelia. Rather, American groups emphasized the heavier qualities associated with both the positive and negative extremes of the psychedelic experience. Some of the pioneering bands in the genre include 13th Floor Elevators, the Charlatans, the Grateful Dead, Count Five, the Beatles, and the Paul Butterfield Blues Band. Of the last three groups, their 1966 songs "Psychotic Reaction", "Tomorrow Never Knows", and "East-West" (respectively) were especially influential.
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