Midtown Detroit Inc. and the DSO present, back-to-back performances of the Chicago-based ensemble, Sidewalk Chalk, that will feature original music and a few holiday favorites. Doors open at 6 p.m. Shows start at 7 and 8:15 p.m. Arive early for food and drink specials, holiday shopping, family activities, photos opportunities and a visit from Santa Claus. Seating available first-come, first-serve.