I listened to zepp 77. They did a version(almost 30min) of NO QUARTER that was unreal. It turned into a blusey funk jam. I knew they rocked arenas but this took it to a whole new level. it opened with THE SONG REMAINS THE SAME and Bonham was playing it in double and at times triple time. He did MOBY ****** that would make any run of the mill drummer hang their sticks up and quit. This triple CD will find alot of playtime at my house. Much to the chagrin of my alternative, Prince loving wife.