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Suggested answer. > In the period 1966-7, three separate kinds of music - folk, rock and blues - were brought together, and influences from other traditions, for example, Indian, were added, to make a much more complex sort of music expressing new attitudes. Electronic devices were used to give music a new sound: it became much louder, and was associated with lighting effects. This, and the use of drugs, made the audience feel that they were not just listening passively, but participating in a 'total experience'.