Musician and inventor Look Mum No Computer found that he had an extra Leslie speaker handy and decided to turn it into a workable guitar. He attached a neck from a Squire guitar, mounted the bridge assembly, and attached the strings. The next step was to check if the body of the guitar (the speaker) actually spun. It did.
Here’s the second part of the build where he automates the spin and adds a Doppler Effect.
Just jamming on the most pointless Doppler effect spinning guitar machine ever