The Kronos Quartet makes its fourth appearance at University Musical Society (UMS) January 17-18, 2014, in Ann Arbor's Power Center. The Kronos Quartet celebrates its 40th anniversary in the 2013-2014 season, with forward-looking artistic explorations that include 12 new commissions. They’ll perform two different programs in Ann Arbor, with the first including former U-M professor George Crumb’s epic work Black Angels, a response to the agony of the Vietnam War featuring bowed water glasses, spoken word passages, and electronic effects. The second program revolves around war and politics, including a suite from the film Dirty Wars, which premiered at Sundance in 2013. For concert information, visit the website link or call (734) 764-2538.