OK-I stand corrected--there are people out there that don't know much about Zeppelin! I guess I shouldn't just assume everyone knows who they are.

As far as categorizing them--I would call them just plain old Rock N Roll by today's standards. Back when they first came out they played a lot of old Rhythm and Blues. Got "heavier" later on but heavy metal today is more head banging music and I just wouldn't call Zep that. I guess back then, they were probably considered heavy metal because no one had ever really heard any one play drums like John Bonham before and Jimmy Page was something different when he was playing his guitar with a violin bow. Very experimental!

To me---they are ROCK N ROLL GODS!!! Rock as we know it now, would be non existant. JMHO (which really amounts to nothing!)