"Zelda's Lullaby" (ゼルダの子守歌 Zeruda no Komoriuta?) is a recurring song in the Legend of Zelda series. It is usually associated with Princess Zelda and is considered to be her personal theme. The song is slightly altered in most later games in the series, usually playing during scenes focusing on Zelda directly. It is possible that when used alongside the Ocarina of Time, this song somehow allows for time travel (or more accurately, warping to alternate worlds) as shown in Ocarina of Time when Zelda used it to send Link into the Child Timeline.