From the mailbag:
Have no idea what this actually sounded like. A Google search turned up nothing helpful. And it’s not to be confused with the iconic “Sound of the City” jingles Johnny Mann produced for KVI (and similarly for KSFO).
Perhaps your readers will have some memory of KOL’s Seattle Song. 
Anybody remember this? Comment below…
This isn't it . . .
July 5, 2025 at QZVX
Dick Ellingson says:
. . . but it’s one I’d like to hear again. At about :40 into every hour, summer of ’59 or ’60, sort of a barber shop arrangement of “In the Good Old Summertime”:
It’s the good old summertime
In Seattle it’s summertime
Keep your radio on for more fun in the sun
With Radio KOL