In what promises to be a sneak preview of October’s Skull Fest show in North Platte, NE, metal shred guitarist, Xander Demos, and his band, have been added to the Killer Dwarfs/Modern Superstar bill in Pittsburgh, PA, on September 22, 2013. The concert will take place at the Dead Horse Cantina, located at 704 Thompson Road, McKees Rocks, PA, at …