Legend of Zelda: Majora's Mask 3D, The (3DS) Cheats & Tips
Cheats, codes, tips, hacks, how to's, and walkthroughs
How to Unlock: The Inverted Song of Time
Using the Ocarina of Time, enter RLYRLY.
How to Unlock: The Song of Double Time
Using the Ocarina of Time, enter YYLLRR.