An incredible achievement of human organization and creativity. A whole culture gets involved with the Dance Festival every five years in Estonia, and preparation that takes that long. Whole generations get into the festivities. Around five THOUSAND performers had to be trained, and marshalled and costumed, housed, etc, etc. On the order of building a cathedral or pyramid, except these were not involuntary serfs. The smiles and energy were contagious even if you couldn't understand any of the words. High rez version