As a young boy growing up in Ireland, Patrick Sarsfield Gilmore loved music -- the louder, the better! This love of music followed him to Boston in 1849, where he became a band leader. During the brutal Civil War, it was music that kept up his spirits and those of his fellow soldiers. So when the war ended and peace was restored to the country, Patrick had an idea. He would create the biggest, boldest, loudest concert the world had ever known to celebrate. A peace jubilee! But with twelve cannons, forty church bells, one thousand musicians, and ten thousand singers, just how would all of this sound?