Disney had cartoon shorts were called "Silly Symphonies." Not sure which came first, but one is a play on the other.

Especially in the early ones; they were basically ads to sell music from the Warner music catalog.

I never got it as a kid, partly because it was a difficult pun for that age. I didn’t know the word tune nor would I later pronounce it like that. The first forms of that word, I ran into, were radio tuner and car tuning, nothing I’d associate with music