This is a perfect example of Humanities Aren’t A Science. Computer programming is used to show that popular music since the 1950s has declined in variability with regard to “pitch, volume, and timbre,” all what reads as a biased attempt to disregard popular music as “inauthentic” or base.
FYI, musicologists have known there is little harmonic variety in popular music for decades. Also, FYI, you missed the point completely. After you read the article, read an ethnomusicologist’s response.
Measuring the Evolution of Contemporary Western Popular Music : Scientific Reports : Nature Publishing Group.