I REMEMBER hearing Paul Stanley say once in an interview that Kiss was such a huge machine that it would take more than just the death of himself and Gene Simmons to kill it.
The Starchild's train of thought was that some younger generation of capable musicians could simply adopt the big platform shoes and make-up and take up where he left off.
I got to thinking about this when I watched AC/DC for the second and possibly last time on Thursday night.
Acca Dacca have shed a couple of familiar faces since the last time I saw them play - namely drummer Phil Rudd and guitarist Malcolm Young.
This didn't ruin the vibe of what was another beautiful and balmy night at the old QEII stadium.
The lads were sounding as good as ever, thanks in no small part to the towering PA setup that they somehow drag accross the country.
The beauty of watching AC/DC also comes back to Angus Young, who at 60 years of age is still like a jack-in-the-box - still spinning around on the floor, still doing that scissor action from one side of the stage to the other. Then there's Brian Johnson, who is the same age as my mother, but still sings like a coal train coming through a tunnel.
I'm told by a reliable source that after a bit of a cold start on Thursday night, Brian ducked out the back of the stage, where a truck and dog dumped a full load of biscuit pebble straight down his gurgler.
It did the trick, because the frontman's voice got progressively back to its gravelly best as the night went on.
How great it is to stand among 40,000 screaming drunks to enjoy some old-fashioned rock 'n roll.
For all you 20-somethings, that means real people that play real musical instruments, not some young toss-pot flicking buttons on the latest Apple device that his mum bought him for his birthday. AC/DC might be getting on in years, but they still walk all over many so-called rock stars a quarter of their age.
Anyway, back to my original question: Could you replace AC/DC's core with younger musos?
Well, there are some things you just can't replace.