Had a talk with Carlos, and it seems that Harmonics is a good unit of analysis to figure out the “technicalities” of appeals brought about by music. (seems especially so for hip-hop).
According to a 9th circuit ruling, any derivative music work should get copyright clearance for every note included in the piece before it can be legally published. This creates a huge problem for hip-hop musicians who constantly borrow from previous works. Getting permissions for each and every note could be so cumbersome and ruin the whole hip-hop culture, so a better pricing mechanism is needed for clearing the rights among musicians. Harmonics seems to be a good starting point to study, there is an interesting connection between harmonics and the traditional hedonic model in econometrics. When I have time, I will have a look at this problem, and hopefully, this can evolve into something helpful for the music industry. I will add a few links belows for future research.
The Einstein playing violin picture is taken from Here. It explains the basics of harmonics.
There are a lot of papers about hedonic models:
Developing a Hedonic Regression Model For Camcorders In the U.S. CPI
Here is a PDF article: Hedonic Theory and Econometric Specification