All invited to Music in the Arb, a series of free summer concerts at the amphitheater in Nichols Arboretum. Featuring eclectic music from locally and nationally known bands and performers. Tonight’s performance by the Billy King Band, whose raw edged style blends traditional acoustic and Chicago-style electric blues. Visit our website at mbgna.umich.edu or call 734-647-7600 for more information and directions. Concert is free and begins at 6 pm.