i dont know what happened between march and july,but i saw them at the pontiac mi show and even cavernous silverdomes bad acoustics didnt stop a great zep show.trampeled under foot was my fav with the giant color wheels.plants voice was good,timing was on.acting with the crowd and each other.90000 people seem to agree.but have heard the later shows on the tour wernt as good,i feel sorry for those people.