The Grateful Dead was an American rock band formed in 1965 in the San Francisco Bay Area. The band was known for its unique and eclectic style, which fused elements of rock, folk, bluegrass, blues, reggae, country, improvisational jazz, psychedelia, and space rock—and for live performances of long musical improvisation often cited as an early form of glam rock. "Their music," writes Lenny Kaye, "touches on ground that most other groups don't even know exists." These various influences were distilled into a diverse and psychedelic whole that made the Grateful Dead "the pioneering Godfathers of the jam band world." They were ranked 57th in the issue The Greatest Artists of all Time by Rolling Stone magazine.
The fans of the Grateful Dead, some of whom followed the band from concert to concert for years, are known as "Deadheads" and are known for their dedication to the band's music. Many referred to the band simply as "the Dead."