Genre is a category of artistic composition such as music or literature characterized by similarities in form, style, or subject matter. The document discusses several major music genres including rock, pop, folk music, hip hop, and electronic music. Rock evolved in the 1960s and was characterized by experimentation. Pop originated in the 1950s-60s as a softer alternative to rock. Folk music includes traditional and modern folk styles as well as world music. Hip hop formed in the 1970s and consists of rhythmic rapping and DJing. Electronic music is the latest genre and involves computer-generated instrumental tracks.