“These people act like we drink a gallon of blood and hang upside down from cruci­fixes before we go onstage,” Rob Halford says. “We’re performers, have been for two decades. We do the show and we wear the costumes our audience expect us to.”

“For this high school generation, attendance at a Led Zeppelin concert is as mandatory as freshman English.”

For his 75th birthday, we look back on a time when the Led Zeppelin virtuoso played through the pain