This short aircheck is from 1981, it is the opening of the Jay Andres show. Jay Andres had a few more years at WGN. He did overnights with a mix of classical/easy listening for many years in Chicago at WGN and some other stations.
http://www.youtube.com/watch?v=q6IvD65mXYs
http://www.youtube.com/watch?v=q6IvD65mXYs