A punk rock band is a musical group that plays punk rock music, a genre that emerged in the mid-1970s. Punk rock is characterized by its fast tempos, simple melodies, and often rebellious lyrics. Bands in this genre typically use electric guitars, bass, and drums, and they often perform in small venues, emphasizing a raw and energetic sound. Punk rock bands often promote a DIY (do-it-yourself) ethic, encouraging fans to create their own music and art. Notable examples of punk rock bands include The Ramones, Sex Pistols, and Green Day. These bands have influenced many other genres and continue to inspire new musicians today.