Great responses so far, thanks so much! These songs you're listing are just the sort of vibe I'm looking for.
Memorable songs from spooky themed movies... songs by famous (and not always spooky) artists that have a spooky theme... songs by typically spooky artists that are especially Halloween related... classic older spooky songs... classic spooky songs remade by newer artists... all that kind of stuff.
I think a good mix CD has a bit of new and old, light and dark, fast and slow, funny and serious....
There are enough Christmas song compilations on the market to choke eight tiny reindeer. It takes a shovel and some digging to unearth Halloween music, but if you know where to look, you realize there's a LOT to be had.