Fabulous Five Froggish Tenors

Fabulous Five Froggish Tenors are singing frogs living in Zora's River. They hold a minigame in Ocarina of Time.

Ocarina of Time
As a child, Link can find the five frogs swimming near a log in Zora's River. When the young hero stands on the protruding log, the frogs hop out of the water and onto the log.

When Link plays the Fairy Ocarina or the Ocarina of Time, the frogs will hop to corresponding notes. The Frogs will award him 50 Rupees for every song he plays for them. If Link plays Zelda's Lullaby, Epona's Song, Saria's Song, the Sun's Song or the Song of Time, one of the frogs will grow in size. If Link plays the Song of Storms, the frogs will not grow larger, but will instead be amazed at the song's ability to create rain and will reward Link with a Piece of Heart.

After all the frogs are fully grown and Link has played the Song of Storms, the frogs will ask Link to help them eat butterflies by playing notes on his Ocarina. When the game begins, a butterfly will appear over one of the frogs. Link must play the note on his Ocarina which corresponds to that frog to make the frog jump and eat the butterfly. They will lead Link through a short song in this method. If Link plays the wrong note or waits too long, the butterfly will escape and he will have to restart the song. If he manages to complete the song, they will reward him with a Piece of Heart.

Majora's Mask
The five frogs also have their own Terminan counterpart in Majora's Mask. They form part of Don Gero's Frog Choir, and if all five frogs are gathered together in Mountain Village during the spring, they will award Link with a Piece of Heart if he conducts them wearing Don Gero's Mask.

Trivia

 * In Ocarina of Time 3D the frogs' reference to is changed to "singin' in the pond", possibly to avoid copyright infringement.