Vocal:
Find a copy of Gershon Legman's "Roll Me in Your Arms" or "Blow the Candle Out", open at random and take yer pick.

Session:
"An Phis Fhliuch", "Fasten the Leg in Her", "Kiss the Maid Behind the Barrel", "An Buachaill Dreoite", "Rolling in the Ryegrass"