I didn't like the night tune from TP Hyrule Field. It just didn't match considering that undead monsters came up from the ground and tried to kill you. I'd rather have them have the "regular" adventure music during the day and then have another more battle-like theme at night.

The only example I have is Castlevania II on the NES. As soon as it turns night, the monsters get harder and the music changes to another tune that reflects the situation: (3:16-4:35)
http://www.youtube.com/watch?v=iadpbiL2Xc0

Much better than the eerie night music from TP that didn't fit the situation at all.

But of course, if there won't be harder enemies at night, then there's no need for music at all in my opinion or have a softer version of the day theme.

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