Andrea: They taught the people living on farms. They used barns or even kitchens in people's houses to teach people how to dance. And today it's still really popular and probably one of Ireland's most famous exports. People all over the world study Irish dancing, including those at the Mary Wheelan dance school who like to enter competitions. "You want to make sure that the adjudicators want to look at you. So loads of sequins on your dress. Sometimes you get people that have got so much crammed on their dress it just looks horrible sometimes. Really bright colours, like you could have pink, orange and lime green. Mine's lilac, pink and gold with a Celtic design on it. " Andrea: They talk about adjudicators. Those are the judges. Colours that you see are pink, gold and lime. And the young girl we heard from has a lilac dress with pink, gold and a Celtic design. Irish stories and culture often are to do with Celtic history and tradition.