Most genres are defined by their sound, but that’s not always the case. Sometimes it’s better to think in terms of an overall musical movement, defined not by its audible characteristics but by what it represents in contrast to genres which came before. The most obvious examples are genres like post-punk (a late ’70s/early ’80s movement which aimed to introduce a more expansive, experimental approach to punk) or post-rock (defined by music writer Simon Reynolds as “using rock
