![1000 WCFL Chicago Larry Lujack 1000 WCFL Chicago Larry Lujack](http://www.formatchange.com/images/chicago/wcfl.png)
![89 WLS Chicago Commercial 89 WLS Chicago Commercial](http://www.formatchange.com/images/chicago/wls.png)
Previous Format: CHR
New Format: Beautiful Music
Date & Time Of Change: March 15, 1976
More Info: Wikipedia, RadioTimeline
This clip is not the actual format change, but rather a commercial for WLS to promote the station to soon to be displaced WCFL listeners.