Sometimes, composers will get clever and insert cues that practically give away the endings to the shows or movies you're watching. If, that is, you're paying close enough attention and have an encyclopedic knowledge of both popular and classical music.
Sometimes things you assume were relegated to museums back when your grandparents were still riding tricycles to school stuck around much longer than you realize.
It turns out you can learn all sorts of interesting shit about the true meaning of songs, books, and movies if instead of debating it you just listen to the damned people who created them.