Its hard to dance like that on concrete - you really feel it in your shins and achilles. The guys in front had bounce boards at least. Well done all, Slainte go deo.
Irish Dance is much older than tap and comes from the Celts and the Druids. Tap dance originated in the United States in the early 19th century through a fusion of several ethnic percussive dances, primarily West African sacred and secular step dances (gioube) and Scottish, Irish, and English clog dances, hornpipes, and jigs.