Forty years ago an incredible classic rock band hit their creative peak when they released Led Zeppelin lV. I remember at age fourteen being handed this record for the first time, and being awe struck by stunning song-craftsmanship and lyrical prowess. The album itself which was released November 8th 1971 was a major success and sold 23 million copies alone in the United States, but only peaked at number 2 on the charts. Many Zeppelin Fans know this album as the one that contains Stairway to Heaven, but among rock critics and fanatics of Zeppelin the whole album is a...