Hardcore punk (also called just hardcore) is a musical genre that started in the 1980s. As the name suggests, hardcore punk contains most of the elements that characterise punk rock in an extreme form. This includes very fast tempos, loud, distorted guitars, pounding drums, and an aggressive vocal delivery that is often more shouted than sung. Hardcore is also known for its very short songs, many of which are well under two minutes long.
Whereas some punk rock music has become mainstream, particularly in the form of pop-punk, hardcore punk only appeals to a small 'hard core' of fans and is rarely if ever seen in the charts. The song 'Brianstorm' by the Arctic Monkeys, which got to number 1 in the UK charts in 2007, contains a furious drum roll section that could be seen as influenced by hardcore punk, but even this is an unusual occurrence.