Punk music is a type of rock music that started in the 1970s. Punk rock bands usually have fast, loud, and simple music. They often have short songs with lots of energy. Punk bands usually have a DIY (do-it-yourself) approach to making music. This means they don’t use professional studios or producers, and they do everything themselves. Punk music is about being against the mainstream and being different. Punk bands are often political, and they sing about things like social injustice and war.