Update, Monday 25th of December 2017

[Dude]

Ftfy

*file select screen bgm intensifies*

[marioguy]

Wait. Rito Village (Day) and (Night) are in two different key signatures. Is the Day version more accurate?

[Olimar12345]

They're different versions in different keys. Both are accurate to the games' sound track.

[marioguy]

Woah! I thought they were both the same song, but the Night version just had a piano replacing whatever instrument was in the Day version. It appears that the Day version is in the same key signature as the the Dragon Roost Island sheet on this site.

[Latios212]

Not just the instrumentation is different, they're in different keys and tempos as well.

[marioguy]

What's the name of the instrument that's play in Night? Is Day the same key signature as Dragon Roost Island?