 The psychedelic lifestyle, which revolved around hallucinogenic drugs, had already developed in San Francisco and particularly prominent products of the scene were Big Brother and the Holding Company, the Grateful Dead and Jefferson Airplane.The Jimi Hendrix Experience's lead guitarist, Jimi Hendrix did extended distorted, feedback-filled jams which became a key feature of psychedelia.Psychedelic rock reached its apogee in the last years of the decade.