Iron Butterfly

Iron Butterfly was an American rock band that played an important role in the commercialization of album-oriented rock in the late Sixties. Their only major hit song, "In-A-Gadda-Da-Vida," with a running time in excess of seventeen minutes, occupied one full side of their album of the same name. That album, released in July 1968, has been claimed by the group and its record company to be the first to sell a million units, and the RIAA has awarded it "4x Multi-Platinum" status.