The first part of the song, Hush Now, Quiet Now from My Little Pony: Friendship is Magic as sung by Hatsune Miku Append (Sweet).

I'm not a musician at all so it was quite difficult for me to make this. I needed a midi file for the vocals but I couldn't find one so I used a program to convert an .mp3 to .midi and then cleaned it up. I wanted to do the entire song (as Fluttershy would have sung it) but I couldn't make a suitable midi file so this is the result.

There are no effects added, just Miku's voice added to the background music.