Here is the forth sketch. It's my OC Everypony!

Here is the deviation: https://musescript.deviantart.com/art/Muse-s-Sketches-4-MuseScript-719541943?ga_submit_new=10%3A1512984262
And original sketch: https://musescript.deviantart.com/art/Muse-Sketches-710217521

Song playing is an instrumental to "Coventry Carol" sung by Tori Amos. That I do not own.