Been awhile since you posted this but just seeing it myself.
Look on the Houston boards for a poster named Holstead1, a.k.a. Rowdy Yates, & you can talk to the man himself about his show & the playlist.
Not busting your chops or anything, just figure maybe you might be interested in talking with him about it. He's a great guy with a lifetime of radio in his blood. Been doing it since he was a teenager & he comes from a legendary radio father.