Epona's Song

Taught to Link as a child by Malon in Ocarina of Time, and retaught by Romani in The Legend of Zelda: Majora's Mask, this pastoral melody summons Link's horse Epona when played in outdoor areas she can feasibly reach. It also reminds cows of home, causing them to give milk if Link has an empty bottle.

In a trailer for The Legend of Zelda: Twilight Princess Link was seen picking a plant referred to as "horse grass" and playing Epona's Song to summon his horse. No other details are currently known, though it has been revealed that the horse is named by the player, and so not necessarily "Epona", meaning the song may be renamed, if it is even given a name.