Rock music originated in the 1950s and has since branched into many genres. It began with rock and roll and electric guitars accompanying bass and drums. Over the decades, rock split into categories like pop, blues, folk, and various types of metal and punk. In recent years, rock divided mainly into pop punk, indie rock, and heavy and alternative metal. Rock lyrics sometimes discuss controversial topics and the genre carries stereotypes like Goth, emo, and punk styles involving dark clothing. The document then lists examples of popular artists in metal, pop punk, and indie rock genres and images typically associated with rock music like dark makeup, tattoos, and piercings.