When I was a kid, whenever the local station (Channel 5 WTTG) would go off the air because of technical difficulties, they played a jaunty tune. I just associated it with their cool “We’re actually mellow about the whole thing” vibe when they couldn’t broadcast.
It was this one:
(click play if you want to capture that old school technical difficulties vibe)
Imagine my shock when I was older and discovered that it was a popular jazz tune and not just background music. I guess it played often enough that I could recognize it.