It started when I stupidly promising my 8 year old that if the mouse brought in by my cat made through the night, we could keep it. It ended with a beautiful rendition of Toccata in D played solely by the rising star Mr Cheesey and the contraption I attached to his wheel. In this talk, I’ll cover the ideas behind the plans, the designing and development of the music box wheel, the challenges of actually making it into a real machine (when some of there parts didn’t even exist) that actually worked and the creation of a YouTube platform showing Mr Cheesey (and his co-star Daphne) running around on their mouse wheel and turning a little hole punch music box covering all the (non-copyrighted) classics. I'll also include structured diagrams explaining how the contraption works in case anyone has a similar idea they want to realise.