From Guardian.co.uk: Van Halen invent hair metal May 1976: Number 32 in our series of the 50 key events in the history of rock music David Lee Roth, of Van Halen, performing live onstage. Photograph: Rob Verhorst/Redferns Thirty-five years ago, a four-piece American guitar band set about changing rock music for ever. They took their name from a brotherly … [Read more...]