Iron Butterfly
Iron Butterfly is an American psychedelic rock and early heavy metal band, well known for their 1968 hit “In-A-Gadda-Da-Vida”. They are considered an early heavy metal band as a result of this song and others like it, as well as the title of their debut album, Heavy (the term “heavy,” slang for things of a deep or thoughtful manner, was an important element in the initial conception of heavy metal, a form of music dealing with war, environmental destruction, drug addiction, and other things of a “heavy” nature). Their heyday was the late 1960s, but the band has been reincarnated several times with various members. VH1 ranks them as number 19 on their list of top 100 “one-hit” wonders. In-A-Gadda-Da-Vida is the 31st best-selling album in the world, selling more than 25 million copies.