Spot,

My pet hates have already been mentioned:

Wild Rover Whisky in the Jar Three old ladies locked in the lavatory, etc

but I really love the alternative lyrical melody used by Sean Cannon for the Wild Rover. Its breathtaking!

Some more popular songs might be those taught in school. For instance:

Martin said to his man Barbara Allen Lord of the Dance Bread & Fishes

Bob vG

PS I have been told that the 'Three old ladies locked in a lavatory' comes from Cornwall and was associated with subsidence from mining that could cause buildings to collapse, especially WC at the foot of the garden.