70s rock legends Styx performs in the area this week By Denny Dyroff, Staff Writer, The Times  Greg Sover Philadelphia may be home to guitar ace Greg Sover but he’ll be spending time in Chester County over the next few days. On August 13, Sover will have a “CD Release Party” at the Steel City Coffee House (203 Bridge Street, Phoenixville, 610-933-4043, www.steelcitycoffeehouse.com). Then, he...