LEADING punk scientists have confirmed the existence of a fourth chord.

Punk scientists have been researching the possibility of an additional chord since the late 70s, but only in a haphazard DIY manner.

Researcher Mary Fisher at the Fuck Your Mum Punk Laboratory said: “One of our team was frantically strumming while buzzing on amphetamines and he just kind of came across it.

“If we had known about this chord forty years ago maybe we could have smashed the system.

“Still, it’s better to take a while than to be too technical because then you end up with prog rock.”

She added: “If there is a fourth then maybe there is a fifth or even a sixth, though sadly they will not be discovered in my lifetime.”