Heavy metal music
Critics disagree over who can be thought of as the first heavy metal band. Most credit either Led Zeppelin or Black Sabbath, with American commentators tending to favour Led Zeppelin and British commentators tending to favour Black Sabbath, though many give equal credit to both. A few commentators—mainly American—argue for other groups including Iron Butterfly, Steppenwolf or Blue Cheer. Deep Purple, the third band in what is sometimes considered the "unholy trinity" of heavy metal (Black Sabbath, Led Zeppelin, and Deep Purple), despite being slightly older than Black Sabbath and Led Zeppelin, fluctuated between many rock styles until late 1969 when they took a heavy metal direction.
Iron Maiden discography
The discography of Iron Maiden, an English heavy metal band founded in 1975 by bassist Steve Harris, includes sixteen studio albums, as well as numerous live albums, compilations, EPs, singles, video albums, music videos, and box sets. After several personnel changes, they released their self-titled debut album in 1980 with vocalist Paul Di'Anno, guitarists Dave Murray and Dennis Stratton, and drummer Clive Burr, quickly becoming one of the leading proponents of the new wave of British heavy metal movement.