Robert Plant criticized musicians who tour with old material. He refuted the possibility of a meeting with Led Zeppelin. In a Telegraph interview, Plant commented: "You can not really go back. It's hard to keep repeating yourself with something that has a year, imagine something that is 49. You need to move forward." Not mentioning names, the singer criticized musicians who continue touring with old material: "That look of boredom ... I can not imagine anything worse." Take a look at him performing Whole Lotta Love last week: https://www.youtube.com/watch?v=NPLanTT-2oc Read more about Robert Plant