There have been a lot of format changes in the Philly radio market.

104.5 has changed formats so many times that I can’t keep up. It used to be Sunny 104.5 when I was a younger kid, then it was Star 104.5 (I listened to the nightly Between The Sheets program with Christopher Knight religiously as a teenager). Then it changed back to Sunny easy listening. Now it’s something else. I think an alternative rock station?

100.3 used to be KISS, playing basically elevator music, before it became Y100.

Similarly, 101.1 used to be Eazy 101. Now it’s B101, much more upbeat stuff.

105.3 has been Smooth Jazz/adult R&B for as long as I can recall. And 102.9 has been classic rock for as long as I remember too.