|Stylistic origins||Blues-rock, Psychedelic rock, Rock|
|Cultural origins||Mid 1960s, United Kingdom and United States|
|Typical instruments||Guitar - bass - vocals - drums - keyboards|
|Mainstream popularity||Mainstream in the 1970s, 1980s and early 1990s. The maximum peak of popularity was reached in the 1980s.|
|Heavy metal – Progressive rock|
|Back beat - Rock opera - Rock band - Performers - Hall of Fame - Social impact|
Hard rock is a variation of rock music with roots in early 1960s garage rock and psychedelic rock. The term "hard rock" may be used several genres such as punk rock and grunge in order to distinguish them from the more radio-friendly pop rock genre.