I used to really enjoy Korn, up until their foruth album. Back when they were creative and such
Anyway, Jon Davis has played bagpipes for a long time - since he was a child if I remember right. He's worn a kilt every once in a while for a long time as well. I can remember very early videos of the band when he wore a kilt anyway.
I love it when he pulls out the pipes. He has been known to get on a bit of a groove for 5 or 10 minutes live. Just an added bonus.
I believe he gets all his kilts (probably free) from 21st Century Kilts in Edinburgh.