In the original, and remake of Link's Awakening for the Game Boy if the player makes their characters name Zelda, they get a remixed version of the main theme I believe.
Quote:Well, it doesn't heal people, but it heals signs.
If the player slashes a sign with their sword, pieces will fly off, if the player feels bad about what they have done, they can repair the sign by playing Zelda's Lullaby near it, once the song is finished, a theme similar to solving a puzzle plays, and the sign magically repairs itself.