<Li> list of festivals </Li> <Tr> <Td_colspan="2"> 2017 in heavy metal music </Td> </Tr> <P> Heavy metal (or simply metal) is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom . With roots in blues rock and psychedelic / acid rock, the bands that created heavy metal developed a thick, massive sound, characterized by highly amplified distortion, extended guitar solos, emphatic beats, and overall loudness . Heavy metal lyrics and performance styles are sometimes associated with aggression and machismo . </P> <P> In 1968, three of the genre's most famous acts, Led Zeppelin, Black Sabbath and Deep Purple were founded . Though they came to attract wide audiences, they were often derided by critics . During the mid-1970s, Judas Priest helped spur the genre's evolution by discarding much of its blues influence; Motörhead introduced a punk rock sensibility and an increasing emphasis on speed . Beginning in the late 1970s, bands in the new wave of British heavy metal such as Iron Maiden and Saxon followed in a similar vein . Before the end of the decade, heavy metal fans became known as "metalheads" or "headbangers". </P>

Where does the term heavy metal come from
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