The Highland Games are over, but I'm still in the mood. A couple of these are sung by Irishmen, but they're Scots songs. One for T99, who identified it rightly:
"...ere the king's crown go down, there are crowns to be broke. So for each cavalier who loves honor and me, let him follow the bonnets of Bonnie Dundee."
And another, for every good-hearted brawler.
And one more, for true lovers. It's an odd piece of advice, but not a bad one: Go and ask your father, and you know he'll set you right.
UPDATE: See JW's suggestions in the comments; but here are two more.
This one especially is a fine song:
And of course there's American Scots.