Okay, so instead of being used to slow down time, the "Inverted Song of Time" is used to access different areas in some dungeons when you play it. The melody ia taught to you by Zelda in the prologue before Chronos shattering time and stuff. ( https://docs.google.com/document/d/170OsMBy-cj5rtNBqIj1rLFEMslrEkI0cQVucbgWW2hg/edit?usp=drivesdk ). Also, this is a big maybe, but I might add more to "Elara's Theme". Anyways, later :)