Psychedelic rock was a hard, driving kind of guitar-based rock, closely associated with the city of San Francisco, California. Though Jefferson Airplane was the only psychedelic San Francisco band to have a major national hit, with 1967's "Somebody to Love" and "White Rabbit", the Grateful Dead, a folk, country and bluegrass-flavored jam band, "embodied all the elements of the San Francisco scene and came... to represent the counterculture to the rest of the country"; the Grateful Dead also became known for introducing the counterculture, and the rest of the country, to the ideas of people like Timothy Leary, especially the use of hallucinogenic drugs like LSD for spiritual and philosophical purposes.