((I had to fight back some serious tears singing this because of the intense emotional connection the lyrics have to the doctor’s character. I also had to play guitar and make the music box and string sounds in Advanced Mario Sequencer. 
Another thing I should note is I’m not entirely sure who to say this belongs to. It’s titled Jamjar's Lullaby, who is apparently the voice of the doctor in the Pony in a box video. The reason for my confusion is, as surprising as it may be, I had never heard this song before, nor had I heard of ponyinabox or doctor Whooves adventures, because my Doctor Whooves following doesn’t go outside Discord Whooves and Love struck Derpy.

So I’m just going to go with “This doesn’t belong to me” and “I’m sure you can figure it out”.))