And the answer is, unequivocally, no NONE. NONE MORE HEAVY:
From this MeFi post with several other worthwhile links.
Observations gleaned from various comment threads on this:
First, amazingly, “War Pigs” is only eleven years after Buddy Holly.
Second, N.B. what a tiny drum kit Bill Ward plays compared to modern metal drummers. It does not seem to slow him down.
Finally, how the hell did Mrs Heathen and I not know this was happening at the 9:30 club that night?