At the round earth’s imagined corners, blow your trumpets, angels, and arise! Celebrating its 10th anniversary with a live four-hour marathon that is truly without parallel, OneBeat showcases outsider musicians from 14 countries on five continents, some as remote as Lake Baikal, some no farther off than the Big Apple. Who would have thought a project like this could survive the parochialism and contempt for the Other visited on this planet in America’s godforsaken latest Gilded Age? Yet here it is, with the improbable support of the U.S. Department of State’s Bureau of Educational and Cultural Affairs. —M.G.