MIDDLEBURY — The Department of Music presents a Celtic music concert exploring tradition and innovation in a genre that is at once ubiquitous, diverse and loosely defined. The performance, on Sunday, March 15, at 3 p.m., in the Mahaney Arts Center’s Robison Hall, will feature Irish and Scottish traditional elements and fusion with different traditions, led by Jeffrey Buettner and Timothy Cummings. Free. For more info visit middlebury.edu/arts or call (802) 443-3168.