Cool Story - My wife and I went to a show in Chicago for the Vertigo Tour. We had general admission tickets. Got there early enough to be 3 people from the center of the "circle". Needless to say, once the concert got going, it was hot and crazy. It was not for my wife. So, she said, "I'm just going to the back of the floor, I'll meet up with you after". She went to get water and was walking back to the floor and passed the sound section. One of the sound people said, "Hey, is that for me?" meaning the water, she said sure and threw it to him. Well, he let her into the sound sections, sat her on a stool and put production headsets on. She heard the voice feed from Bono's mic,all of the feed back from the production people, etc. etc.. I forget what song they were doing, but she said one point, one of them was yelling....all hyped up....saying,"HE'S ON...HE'S ON....HE IS IN RARE FORM. LISTEN TO HIM TONIGHT. HAVEN'T HEARD HIM THIS GOOD SINCE......" Anyway, since this was about voice and all...she heard the raw voice feed and was amazed....and apparently so was the crew that night. She left with that experience plus some crew (not for public) Vertigo memorabilia...pins, posters, etc..