Hardcore punk (or hardcore) is a style of punk music that usually sounds louder, faster and more angry than earlier punk rock music from the 1970s. Hardcore began in the late 1970s. Some of the important bands of the genre are Bad Brains, Black Flag, D.O.A, Minor Threat and Cro-Mags. Hardcore songs often have more political lyrics (words) than songs from 1970s punk.