Music21 is an awesome python library that lets you analyse music in many different ways. On the podcast, DataSkeptic, it was asked, "Could I use Music21 to find out Bach's favorite chord?" The author of Music21 said, "Yes."
So this is putting that to test.
It is a basic python script. Download and run, nothing else is needed to go!
The only prereq is the Music21 library which can be install with pip.
pip3 install music21