Who was the first heavy metal band?
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.
Wickedness
Heavy Metal is a genre of music with lyrics that are dark and people consider to be satanic. It was introduced on Friday the 13th in February 1970 when Black Sabbath released Black Sabbath. Around this time period the Vietnam War was going on, the deaths of Martin Luther King Jr. and John F. Kennedy occurred, the death of Flower Power and the second Cold War was coming into play. These events influenced the lyrics of the songs that are considered heavy metal. While it may seem evil or a form of protest it is really up to interpretation over whether or not Heavy Metal is considered wicked and connected to the devil.