Singing Doctors Bent On Controlling The World

[Bouncing Ferret FIlm]

So i'm on the search for Singing Doctors who are hell bent on controlling the world and they sing about it.
I've got Dr. Steele and Dr. Horrible, maybe even Dr. Demento.... does anyone know of any other doctors that sing and are wanting to control world?

 

[DefunctTheory]

Not a Doctor, but the Music Meister deserves to be mentioned.