Grateful Dead was an American rock band formed in 1965 in Palo Alto, California. 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. "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.