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Acid Rock usually defines contains a lot more jamming and a generally more heavy sound, while Psychedelic Rock usually defines shorter and more tightly written tracks, and is usually a bit lighter. A lot of people use them interchangably though, so always take it with a grain of salt

Jun 09, 2020 · Acid rock, then, is a heavy type of rock music with psychedelic influences. Musicians of this genre create sonic textures that culminate in a psychedelic effect, sometimes unintentionally, with the sound of their instruments or the interplay between two or more instruments.

Acid rock is a loosely defined type of rock music which emerged during the 1960s psychedelic era. The term, which derives its name from lysergic acid diethylamide (LSD), is often deployed as a synonym for "psychedelic rock", though it can also refer to a more musically intense variation or subcategory of the psychedelic rock genre.

Generally, the term "acid rock" is equivalent to psychedelic rock. Rolling Stone magazine includes early Pink Floyd as "acid-rock". In July 1967 Time magazine wrote, "From jukeboxes and transistors across the nation pulses the turned-on sound of acid-rock groups: the Jefferson Airplane, the Doors, Moby Grape ".