Huun Huur Tu is a quartet of singers and instrumentalists from Tuva, a remote region of southern Siberia near the Mongolian border. The music of Tuva's sheep and reindeer herders is best known for "throat singing," the ability of singers to produce multiple notes (a fundamental pitch plus overtones) at the same time and even to sing more than one melody simultaneously. But that's just the beginning of the wonders contained in Tuvan music, which is thought to embody some of the oldest forms of human music-making. It is intricately linked with the forbidding natural environment in which it is made, for one thing. And even with the depth of the tradition that Huun Huur Tu carries forward, its members have proven themselvs adept at collaborating with Western musicians. Huun Huur Tu tours all over the world, so Ann Arbor stops on the itinerary of this unique group are infrequent—once a decade or so. Don't miss this chance.A rare local appearance.