They all come with cute little jingles of people singing the letters!

KOME:

https://www.youtube.com/shorts/rMhtoniG82o

(I wish I could find a recording of the one that went;: "Don't touch that dial!!! You've got KOME on your radio." or "The KOME spot on your FM dial.")

Vintage WWDC:

https://www.youtube.com/watch?v=iPybevwjinM