I only discovered MLP:FIM last year.  
 
Little did I know that with the show itself I will also discover an insane work of the fandom - gorgeous fan artworks, beautiful stories, and - most significantly for this series of drawings - breathtaking music.  
 
One such piece is the song “Lullaby for a Princess” by ponyphonic.  
 
I stumbled upon it completely by accident, and oh boy - listening to it just transferred me to a different world; but if that wasn’t enough, the song is accompanied by an A-level animation, which is also 100% fan-made.  
 
My mind was blown, and yours can be too if you go watch it yourself: https://www.youtube.com/watch?v=i7PQ9IO-7fU  
 
I recommend this video even if you’re not necessarily a fan of MLP - the level of artistry in the lyrics and music, along with gorgeous visuals can absolutely stand on its’ own.  
 
Also, there is an organ section in it, and I am a massive organ simp so I don’t think it could’ve gone any other way, really Sweating a little…