Oh wow. I have a long list. These are my top favorites:
Zelda's Lullaby: It's calming, sweet, and I just love it. I can't explain why I love it so much.
Gerudo fortress: I love the rythyms and it's so lively.
Dragon Roost from tWW: it's very cheerful.
Molgera battle: catchy, very cheery, and a great beat.
The Legend of Zelda main theme: classic, heroic, overall, just inspiring.
The Chozo place in Metroid Prime: so beautiful and smooth.
I forgot the name of the place, but where Samus's ship is in Metroid Prime: same as above.
Song of Time: Even though it's short, there's so much emotion. it's majestic and smooth, like a river. A river of time.
I know there are more, but I forgot some.