Heavy metal or metal is actually the genre of music that developed mostly in the United States and the UK in the later part of the 1960s and early part of 1970s. It has its roots in psychedelic rock and blues and the various bands that specialized in metal, created a thick and massive sound which was characterized by the extended guitar solos, amplified distortion, emphatic beats and was overall very loud. The lyrics of this genre of music were chiefly associated with machismo and masculinity.
The initial stages of the genre
The initial bands that specialized in heavy metal music were Led Zepplin, Black Sabbath etc. attracted huge audiences. Although the critics often derided them and this status was consistent throughout the history of this genre. Judas Priest who appeared in the mid 1970s did a lot to enhance the evolution of the genre by eliminating the blues influence. Then there was Motorhead band which introduced a sensibility of punk rock and enhanced the importance of speed.
The emergence of the true form of heavy metal
After this the truest form of heavy music emerged with the bands like The New Age and Iron Maiden. The name of metal heads or head bangers was given to the fans of the heavy metal genre of music. In the beginning of the 1980s a sense of commercial force was generated by glam metal with bands like Motley Crue and Poison. There was an active underground scene which produced a more extreme and aggressive styles. Then came Trash metal with bands like Metallica, Megadeath, Slayer and Anthrax. The other styles of metal like Death Metal and Black metal remained a subculture phenomenon.