I guess you could call this a Valeyard Theme. It kind of sounds like the Doctor Who theme, but its not.
Anyway, I think that the Valeyard is a fantastic character and should appear in new who. *ahem*

If you don't know who he is, then you seriously need to watch Trials of a Time Lord.
Do it!
Now!

Get the full album here:
https://jaspersynth.bandcamp.com/album/bigger-on-the-inside

Doctor who is copyrighted to the BBC.
This video and musical album is held under fair use and other such legal provisions.