You know 'Monster Mash', the famous Halloween-based jingle? Turns out you DON'T. If you listen to the lyrics of the song you hear: "they're doing the mash... they're doing the monster mash". You aren't listening to the song, you're listening to a song ABOUT THE SONG.
Naturally when this was revealed Twitter lost it's mind, and rightfully so. See the ground-breaking tweet here.