Every year at the beginning of August, dozens of musical groups from all Celtic countries converge on Lorient. The program includes sea shanties, rock concerts, jazz bands and classical quartets. The days are punctuated by a parade of folk delegations. In the evenings, popular balls, the famous fest-noz, bring festival-goers together in the same way as peasants used to do after work in the fields. The "Interceltique" is a must for those who want to embrace the Breton spirit.