The theme from your favourite television show growing up.
I think I will go for several.
First up: Doctor Who and since there are many versions of the theme I am going with my favourite Doctor.
Next is the sci-fi sitcom Red Dwarf.
The Avengers. Tara King was/is my favourite Avenger girl
Blake’s 7 which I discovered through VHS
As you can tell, I watched a lot of TV growing up.