Oath to Order

The Oath to Order is an Ocarina song featured in The Legend of Zelda: Majora's Mask. It is taught to Link by the first of the Four Giants, which he meets after defeating Odolwa in Woodfall Temple, the first of four Temples in the game.

The song, although taught to Link quite early on, only has an effective use after freeing all Four Giants, and is played on the end of the Third Day, when the Clock Tower opens up, after conversing with The Skull Kid, Link plays this song and summons the Four Giants, which prevent the moon crashing into Termina long enough for Link to defeat Majora.

It should be noted that this song can be used before freeing all Four Giants, however this will not result in the continuation of the story as the Giants cannot prevent catastrophe unless they are all present.