The ultimate jam band was the Grateful Dead who came together in California in 1965 and were inducted into the Rock and Roll Hall of Fame in 1994. Heavily associated with the hippy movement, the band and their fans had a “happening” every time they were at a concert. The first album the Grateful Dead recorded on their own label occurred in 1973 with “Wake Of The Flood.” A green vinyl copy, as seen here, can get you $750.00 today.