I'd listen to this everytime I need to cheer up! :)

Calm

Sword Art Online - Reconciliation Piano Cover

Simulanka | Genshin Impact | Not mine just so you know. From Hoyoverse, but it is not published yet.

Sad music box music

Follow me:
Soundcloud: @tuomasdata
Spotify: open.spotify.com/artist/12NjG2NhuKYBq6qfN5jE0

I've always loved this track from Violet Evergarden but it's not on SoundCloud so I figured I'd put it on here