The Grateful Dead was an American rock band formed in Palo Alto, California in 1965. Known for their eclectic style that fused elements of rock, blues, jazz, folk, country, bluegrass, rock and roll, gospel, reggae, and world music with psychedelia, the band is famous for improvisation during their live performances, and for their devoted fan base, known as "Deadheads". According to the musician and writer Lenny Kaye, the music of the Grateful Dead "touches on ground that most other groups don't even know exists." For the range of their influences and the structure of their live performances, the Grateful Dead are considered "the pioneering godfathers of the jam band world".
The Grateful Dead was founded in the San Francisco Bay Area during the rise of the counterculture of the 1960s. The band's founding members were Jerry Garcia, Bob Weir, Ron "Pigpen" McKernan, Phil Lesh, and Bill Kreutzmann. Members of the Grateful Dead, originally known as the Warlocks, had played together in various Bay Area ensembles, including the traditional jug band Mother McCree's Uptown Jug Champions.