The Harvard Celtic Society is a student organization devoted to exploring the culture and singing and playing the music of Brittany, Cornwall, Ireland, Man, Scotland, and Wales, and in general to cultivating the celticity of the Harvard community. It was founded on St. Patrick's Day, 1999, and now boast a membership of over 350, one of the largest student groups at Harvard. The Celtic Society welcomes all to its weekly musical céilís, periodic concerts and topical seminars, and other events.