35978d12_Zelda___Majora_s_Mask____Songs__Where_to_play
[How to play] Song of Time [How to learn] Deku Link learns the Song of Time on top of the Clock tower on the final day after midnight when he pegs the skull kid with a snot bubble and recalls a memory of Princess Zelda teaching him a song. [Where to play] 
The only use for this song is to turn back time to the dawn of the first day. Do this when you are finished with your current three day cycle and wish to save and begin on the first day.
The Legend of Zelda : Majora's Mask -- Songs
Where to play