Hyrule Castle (Theme)
The Hyrule Castle theme, also known as Farewell Hyrule King, is a frequently recurring song in the Legend of Zelda series. It is commonly used as a leitmotif for the King of Hyrule.
It is not played in the actual Hyrule Castle, which instead uses an original theme in a time signature of 5/4. This one has a variable mix for the exterior (which quotes the Overworld Theme) and the interior (which quotes Zelda's Lullaby). Both versions quote Ganon's Theme and Ballad of the Wind Fish. However, it is used as King Rhoam's theme, hinting at the Old Man's true identity before it is revealed.