You should see all the filks that people in the SCA do! :-) And oh, do you ever listen to Weird Al? There's also these, that I absolutely LOVE, and perfect for your pet universe. :-) AcapellaScience.

https://www.youtube.com/channel/UCTev4RNBiu6lqtx8z1e87fQ

https://www.youtube.com/channel/UC2y3CMu4X5EX5IjrXqZEQKw