The famous "Discord" remix by TheLivingTombstone made into Note Blocks using a MIDI file and the Minecraft Note Block Studio.

LINKS:

Song:
Eurobeat Brony - Discord (The Living Tombstone's Remix):
http://www.youtube.com/watch?v=xPfMb50dsOk

Studio:
Minecraft Note Block Studio
http://www.stuffbydavid.com/mcnbs

MIDI File Creator:
Synthesia Piano Game
http://synthesiagame.com/