Greetings,
I wrote this long treatise on barbershop harmony and tuning concepts. I hope to more formally publish it soon. As this is not formally published yet, please do not cite or distribute without permission.
Here is a link for now to download a zip file with the thesis and audio:
https://drive.google.com/file/d/1JC_k404mrWkW1cJd3WiZ1w-tJUY4HqNx/view?usp=sharing