Agia Fanfara may be humble, but they're also a household name. This 25-piece brass, woodwind and percussion band has earned a kind of superstar status in Greece—not through showmanship, but through the fierce devotion of its fans. There's nothing flashy about them, and none of its members would ever fit into the typical “celebrity” mould. They’ll be joining the This is Athens City Festival for a full-blown Balkan street party, starting at Attiki Square and dancing its way to Agios Panteleimonas Square.