Growing up, TV sure had fewer channels, and many shows were instantly recognizable by their theme songs! I remember a fun piano bar in Greenwich Village, NYC, where they sang TV classics that totally date me: The Beverly Hillbillies, The Addams Family, The Jetsons, The Flintstones, All in the Family. And come to think of it, they all shared a common theme: family!
We didn’t even realize we’d memorized every word, to sing along and join in the fun. It was a locked in memory; once we heard the music the rest was easy.