Iron Butterfly is an American
hard rock and
psychedelic band, best known for their sole hit "In-A-Gadda-Da-Vida". The band was formed in
1966 (see
1966 in music) in
San Diego and released their debut album,
Heavy, in
1968 (see
1968 in music). The 17-minute "
In-A-Gadda-Da-Vida" became a huge hit that spent over a year in the Top Ten. The follow-up,
Ball[?], was less successful, and the band broke up in
1971 (see
1971 in music).