Epona's Song

Epona's Song (エポナの歌, Epona no Uta) is a melody played by Link in certain games to call Link's horse, who is usually named Epona automatically. A vocal version of this is sung by Emiko Shiratori.

Ocarina of Time
In Ocarina of Time, Epona's Song can learned from Malon, Epona's owner, in Lon Lon Ranch when Link is a child. Initially, Link can play this on his Ocarina to tame Epona and beck her to come. After the horse is won from Ingo at Lon Lon Ranch, playing the song as an adult allows Link to call Epona and ride her. Whenever this song is played, Epona travels to wherever Link is in Hyrule Field, Lake Hylia, Gerudo Fortress, and some other outdoor areas.

If Link has an empty bottle, Epona's Song can also be played around cows to earn milk.

Malon can be heard singing this song at night at Lon Lon Ranch or Hyrule Castle, depending on how far the game has progressed.

Majora's Mask
This song can also be played on Link's ocarina to call Epona in Majora's Mask, but only after Link first finds her in a stall at Romani's Ranch. Once again, it is only effective in areas Epona can reach, such as Termina Field or certain portions of Great Bay Coast.

Twilight Princess
Although the song appears again in Twilight Princess, it may not be as one would expect. Even though it still calls Link's horse, rather than playing a musical instrument, Link must blow into a piece of Horseshoe Grass to perform the song initially. Later on, the portable Horse Call allows this song to be played anywhere, instead of just where certain patches of grass can be found.

While in Wolf Form, Link can howl the song to summon Epona whenever he's near a patch of Horseshoe Grass. It's pointless to do so however, as he can only ride while in human form.