The song is called WEEP YE WELL BY ATHOLL. It was written by George Weir and music by Roy Williamson

1.
Oh weep ye weel my dear by Atholl
weep for oor finest jewel
weep for oor John wha battled
by the Garry's deepest pool
by the heights of Killiecrankie
by the tears of morning dew
lay the broadsowrds of Kilarnie
wi the tartan and the blue

2.
Lang we lay amang the heather
gently sped the mist away
panting like the hounds of summer
waiting for the deer tae slay
by the drums of brave Dunbarton
rose the Eagle wild and free
by the pibroch of Dundonald
rose the bonnets of Dundee

3.
Like a torrent doon the mountain
swept the avalanche of steel
rose the wild cry of MacDonald
flashed the claymore of Locheil
by the red leaves of the summer
whirling by the Garry's pool
came the whirlwind o'er the heather
roaring like the flood at Yule

4.
Doon the pass the leaves are swirling
doon the glen noo in the gloom
where the redcoats noo are burling
in the Garry's bloody pool

^^