I key my tracks by ear but finally tried MIXED IN KEY...
Because of the inaccuracy of DJ software to analyze track keys, I often have to verify all my songs using my ears and a piano app. The folks at Mixed in Key reached out to me to try out their software. This video is how it went.
Check out Mixed in Key here!
https://mixedinkey.com/?c=Pri
Full disclosure: this video is a paid sponsorship by Direct Music Service and Mixed in Key. MIK has asked me to demonstrate their product. The experiment I ran in the video was to provide objective results that aren't skewed by any opinions. MIK did not provide a script or any instructions on how to use the software. They simply provided a license key and the video was up to me to put together.