There is an argument for including "Caledonia" though I can't see the Beeb admitting it. It's become an anthem on independence rallies, dreich and mediocre though it is. I last heard it sung at the anti-Brexit rally outside the Scottish Parliament last Friday.

BUT it would have said more about the song's significance if they'd played a recording of a politicized crowd singing it rather than put Dougie Maclean's version on.