I enclude the lyrics here for anyone who knows the tune. I don't, but the lyrics are very good.
The Bonnets of Blue
I'll sing ye a song in praise o' that land
Whaur the snaw never melts on her mountains sae grand
Whaur the sweet purple heather it covers the bens
And the thistle grows green in her valleys and glens
I'll sing o' that hardy intelligent race
Wha's valorous deeds time can never efface
And wha's sires the Romans could never subdue
I'll sing o' the lads wi' the bonnets o' blue
Chorus
Then hurrah for the tartan, the kilt and the plaid
Then hurrah for the claymore they wear by their side
And hurrah for the hearts aye sae trusty and true
Success tae the lads wi' the bonnets o' blue
Wha' hasna' heard o' the year forty-five
When Charlie for Scotland sae nobly did strive
And wha' hasna' sighed for the heroes sae brave
Wha' fought at Culloden, a glorious grave
Their thousands they offered for Charlies fair heid
But they werna' men for the dastardly deed
They might torture them, hang them, starve them tis true
But nae traitors were there 'mang the bonnets of blue
Ye'll hae heard how in Egypt, Napoleon the great
Turned oor brave army on as he thought to their fate
And how fairly bewildered he gazed when he saw
The gallant advance o' the brave forty-twa
And o' how that he boasted invincible corps
Turned tail at the glint o' each gleamin' claymore
And o' how his auld guardsmen at famed Waterloo
They ran frae the charge o' the bonnets o' blue
Swift was the terrible march o' the gael
The men wha were never known how to fail
Hard was the stroke o' each trusty claymore
When relieving Lucknow or avenging Cawnpore
King Edward kens aye, kens braw and weel
That his ain kilty lads are as true as their steel
And whenever there's dangerous work for to do
He sends for the lads wi' the bonnets o' blue