The horses sing a lot.

Boundless thanks to my friend, the magnanimous Shaulaise for putting this tier list together.
https://www.twitch.tv/shaulaise

Find the tier list here: https://tiermaker.com/create/updated-mlp-g4-and-eqg-songs-16838073

Music: 
Old New Home 2 - Vanware
Outro: Moonsounds - SlyphStorm