Iron Butterfly

Iron Butterfly was important in the history of rock. They are considered the first metal band. Their In-A-Gadda-Da-Vida is noted for its excessive length of over ten minutes, likely intended for tripping out to. They were a pioneer of stoner metal, a psychedelic form of stoner metal and the original form of metal. Other pioneers include Black Sabbath, The Jimi Hendrix Experience, and Led Zeppelin. Although considered a one-hit wonder, they had two certified albums. They have been considered for the Hall of Fame before but not chosen.