Decades ago, before the era of huge radio conglamerates and when many DJs actually had the freedom to pick personally the tunes heard on their shows, a fair number of singers decided to record songs about DJs themselves, no doubt in the hopes of increasing their record's appeal to the various gatekeepers behind the microphones.
An earlier dispatch on this topic can be found over here.
Stuart Owen - B.J. The D.J. (2:42)
Mike Lane - Letter To A D.J. (3:25)
B. Bob Akers - D.J. Wife (3:09)