The Legend of Zelda: Majora's Mask 3D Cheats

Scarecrow Songs
Here are the two songs from the scarecrow. He is right before the Astral Observatory (Bombers' Passageway).
Song of Double Time:
C-Right, C-Right, A-Button, A-Button, C-Down, C-Down

Inverted Song of Time:
C-Down, A-Button, C-Right, C-Down, A-Button, C-Right

The "Song of Double Time" speeds up time and the "Inverted Song of Time" slows time down!

Mod Note: The following has been written "the song of double time speeds up time" and "the inverted song of time slows time down" BUT that is not correct! The song of double time skips ahead to the next night/day (depending on what time it is) and the Inverted song of time slows time down and also returns it to NORMAL if you have slowed it down.