Iron

On Ball, Iron Butterfly began to expand their sound, attempting to write more concisely. On Metamorphosis, the group continued their musical explorations, adding a layered production to their sound. However, only keyboardist/vocalist Doug Ingle was enthusiastic about the band's new musical direction and most of the group refused to participate in the recording of the album, claiming it strayed too far from Iron Butterfly's signature sound. The truth of the matter is the rest of the band was right - under Ingle's direction, the group tries stylistic diversions that they do not have the ability to accomplish, including funk and acoustic ballads. Nevertheless, this ambition makes for an interesting listen, since Iron Butterfly's albums can be weighed down by their relentless heaviness. Despite a handful of strong tracks - particularly the single "Easy Rider (Let the Wind Pay the Way)" - most of the album doesn't hold up on repeated plays.

Iron Butterfly is an American rock band best known for the 1968 hit "In-A-Gadda-Da-Vida", providing a dramatic sound that led the way towards the development of hard rock and heavy metal music. Formed in San Diego, California, among band members who used to be "arch enemies", their heyday was the late 1960s, but the band has been reincarnated with various members with varying levels of success, with no new recordings since 1975. The band's seminal 1968 album In-A-Gadda-Da-Vida is among the world's 40 best-selling albums, selling more than 30 million copies.

Documentary profiling the history of British heavy metal, with the emphasis on the godfathers of the genre, Iron Maiden, along with other bands of that ilk, including Samson, Saxon, Diamond Head and many others.