On Memorial Day, 2007, many of the announcers and newsfolk who were part of the WLS dynasty in the late 60s and 70s returned to the Big 89 for a one-day rewind. It was enjoyable listening, ala Keener’s rebirth during the Woodward Dream Cruises of 2002 and 2003, and it made us ponder our perennial questions: What made these legendary Top-40 flame throwers such unique radio stations in their prime and how has the radio vibe changed over the years? Here are two opinions, one from John Rook, who programmed the Big 89 in the late 60s. The second from Jeff Davis who worked there on the air. See if you notice anything that resonates with the Keener formula.