You know your rock band has made it into the big league when it finally gets a mention in the Rock And Roll Hall Of Fame. When Led Zeppelin were finally inducted there in 1995, their biography described them as influential in the 1970s as the Beatles had been the decade before. Having drawn upon a wide range of influences themselves, Led Zeppelin - comprised of Jimmy Page, Robert Plant, John Paul Jones and John Bonham - would go on to become the first heavy metal band in the history of music, noted for their use of loud, distorted guitars coupled with a lifestyle of debauchery which would become synonymous with the genre. While practically no one on the planet hasn't heard their most famous song Stairway To Heaven, Led Zeppelin's discography is full of experimental music which pushed through boundaries - everyone from Queen and Madonna through to Nirvana and Megadeath has cited their influence on their music.