Spirit Flute

The Spirit Flute is an item found in Spirit Tracks. Throughout Link's quest, he will find members of the Lokomo Tribe who will teach him a song that he can play on the Spirit Flute. Playing the song restores portions of the Spirit Tracks, which will allow him to gain access to new areas. The Spirit Flute was originally owned by Tetra.

History
It is stated by Anjean that the Spirit Flute was given by herself to Tetra long ago when the feisty pirate captain first arrived on the shores of the land. Tetra promised that she and her descendants would use the Spirit Flute to protect the land, as she was the heir to the ancient royal line of Hyrule that would come to rule over the land. For many years, Tetra and Anjean carried on a close friendship, and Tetra would often play the Spirit Flute for her granddaughter, the reigning Princess Zelda at the time of Spirit Tracks, when she felt troubled or worried. Upon meeting the reigning Princess Zelda, Anjean notes the many similarities between the princess and her grandmother, as well as instructing she and Link to keep the Spirit Flute with them as it will aid them in restoring the Spirit Tracks.