Metal and Punk are about attitude. Metal is an extreme version of Rock music, comprised of high volume, theatricality, and machismo that developed in the 1960’s and 1970’s in the US and the UK. Known for its extended guitar solos, amplified distortions, and forceful beats, metal lyrics sometimes lean more towards dark content, but with loud output. Instruments are typically electric guitars, bass guitar, drums, keyboards and vocals. Metal bands include Led Zeppelin, Metallica and Glam Metal bands like Motley Crue and Poison. Punk, on the other hand, tended to be more stripped down, with fast, hard edges. Punk tends to reject the mainstream contemporary rock culture adopting an even more negative demeanor probably feeding off the social unrest in 1977 in Britain. The fanzine, Sideburns said of punk music, “This is a chord, this is another, this is a third. Now form a band.” Examples of punk music are the Sex Pistols, Nirvana, and Green Day.