Why is this secret caused? When certain things are done in the Gerudo places, the game messes up in music. It's because the player does an unexpected thing, and the game can't react. Really, you must ride Epona to Gerudo Valley when the Sun is at its middle point. Then, goto Gerudo's Fortress. Get off Epona and then walk back to Gerudo Valley, then back to Gerudo's Fortress. Play the Sun's Song: C-right C-down C-up (repeat once) Then, since this was unexpected, the game doesn't know what to do and reacts by playing music at night. Love your site,