Frogman, learsfool, and Rok, the reason they can never get it right, or get it wrong a lot of times, is because they are working on two different sounds, one for who ever is on the stage, and another for whoever is far out into the audience. When they get the one for the audience right, people on the stage began to complain that it's wrong.
I've been there before. If the people on the stage realize it doesn't have to be right for them, they can get it right for the audience.
Enjoy the music.