One of the catchiest cartoon themes I remember from childhood is "George Of The Jungle." I haven't seen the cartoon in decades, but I remember the theme song clearly. There almost isn't any need to watch the cartoon, as the theme spells out everything you need to know about the characters.
I've been trying to sleep, but the inner voices of my mind's soundtrack keep advising, "Watch out for that tree!" For one day, at least, I'm OK with that. It's sound advice, I'm sure.