I spend a few hours listening to allot of live U2 footage, And why is Bonos voice always different? I dont know if its only me or not. early 360 sounds higher than later 360. And elevation, Vertigo and 360 all sound different. And sometimes the newer stuff sounds more like really old stuff than stuff just a few years ago. Like Bono sounds more PopMart like now than he did during elevation which was right after pop mart. Whats going on?