sentences:  On June 25, 1984 at 1 am, the call letters changed to WCRZ and the format became adult contemporary.Fame by Irene Cara was the first song played in the new format.Those calls were assumed by an easy-listening station in Tuscola, Michigan three years later, and that station is known today as WWBN, and has been a sister station to WCRZ since the mid-1990s.