Why Do We Feel Sad When Music Reminds Us of the Past?

When you hear a song from your past, it can bring back memories, like when you used to play with your best friend or had a big laugh in the park. That’s because music and memory work together in a special way inside your brain. Your brain connects music with feelings, so even if you're sitting quietly, you might feel happy or sad just from hearing a song that reminds you of a time you felt that way.