Form of music influenced by anarcho-punk, hardcore punk and extreme metal.

A fusion of garage rock and punk rock. It is fast-paced lo-fi music characterized by a dirty, choppy guitar sound—usually played by bands who are on independent record labels or who are unsigned.

An underground music genre that originated in the late 1970s, following the mainstream success of punk rock. Hardcore is generally faster, thicker, and heavier than earlier punk rock. The origin of the term "hardcore punk" is uncertain.

Protopunk is a term used retrospectively to describe a number of musicians who were important precursors of punk rock in the late 1960s to mid-1970s, or who have been cited by early punk musicians as influential.

A rock music genre that developed between 1974 and 1976 in the United States, the United Kingdom, and Australia. Rooted in garage rock and other forms of what is now known as protopunk music, punk rock bands eschewed perceived excesses of mainstream 1970s rock.