PAMS Series 18 was written by Euel Box. This was the fourth series since PAMS instituted the variable logo. The idea behind the logo was to write a bass/rhythm section of the track which could have virtually anything sung over it.
Many stations incorporated local songs about their city/state into their logos. For example, WABC’s “Seventy Seven” is musically “I’ll Take Manhattan”. Some stations used logos they’d been using with prior producers for decades. When WNBC decided to do resings on the classic PAMS tracks, they utilized the NBC network chimes. Musically, the chimes were G-E-C… for General Electric Corporation… who owned NBC prior to RCA (in that era).
(from Uncle Ricky: Not every station in this composite uses a different logo, musically, but it does demonstrate the technique, and the value of a strong musical “signature” that becomes identifiable with the station’s call letters. How many different musical sigs do you count here?)