Led Zeppelin spawned a lot of bad things, from stoners with uncombed hair to self-indulgent drum solos, but for that we forgive them, because every one of those things was born of awe. Who doesn’t on some level wish to emulate that loud grandiosity? I’m not immune. It’s not music for easy listening; if you don’t crank it and ‘bang, Odin may smite you. There’s really something childish – though not in a bad way – in the simple pleasure of a very loud and pounding song. This one gave birth to a lot of emulations. Few came close.