The tune is an old Scots drinking song ( When the Bonny Lads got michty fu' ) named "Doon in the Wee Room" and was used by Stan Laurel in one of their Vidz many Moons ago! Stan Laurel played at the Glasgow Music Hall in Argyll Street at the turn of the 20th Century, and probaby picked up the tune there. The Music Hall is being reconditioned now after decades of neglect!