Also: West Chester trio Wave Radio, The Addams Family and the blues in Wilmington By Denny Dyroff, Staff Writer, The Times Kategory 5, a new band made up of some of the region’s top solo and group performers will be rolling in the tunes of the 1970s and 1980s during their show at The Flash in Kennett Square, Friday night. It’s often been said that “What’s old is new” and it’s true...