Song of Time

The Song of Time is the musical tune that Princess Zelda teaches Link as she passes on the Ocarina Of Time to him in The Legend Of Zelda: Ocarina Of Time. In this game, it is used for opening the Door of Time in the Temple of Time (after finding all 3 Spiritual Stones) where the Master Sword is kept.

In The Legend Of Zelda: Majora's Mask, Link recalls the song and uses it in order to return to the beginning of the three-day time loop that he is caught in in order to gain enough time to summon the four giants together and stop Majora's plan to crush Termina with the landing of its moon on Clock Town.