R U Kidding? Led Zeppelin revolutionized rock and roll for generations to come. They dont play "Off Key," dumbass thats called jamming, and its something this band mastered. Try to play a song like heartbreaker really slow and what you've got is a genius blues song. Jimmy Page was a musical genius whose riffs where some of the most memorable in history. John Bonham, the drummer always, always stayed EXACTLY in tempo with the rest of the band and still pulled off some of the craziest fills ever. Listen to the bass in "What is and what should never be," and "Ramble on," you will find how the amazing bass of John Paul Jones drove one of the greatest rock n' roll bands ever. There is nothing to say about Robert PLant's voice because any man with the tiniest bit of musical sense would know that he has one of the greatest and most fantastic voices in rock and roll history. A song like "Stairway to Heaven," and "The Immigrant Song," are perfect examples of Plant's musical versatility and his understanding of music. In "Stairway to Heaven," somes up the "in sync-ness," of Plant and Page and how perfectly IN KEY they can stay. Furthermore one has not to be a fan of rock to appreciate the sheer genius of one of the greatest bands ever.