"We found evidence of a progressive homogenization of the musical discourse," explained a member of the Spanish National Research Council, who spearheaded the study. "In particular, we obtained numerical indicators that the diversity of transitions between note combinations — roughly speaking chords plus melodies — has consistently diminished in the last 50 years."
The "timbre palette" of pop songs has also apparently narrowed, while the "intrinsic loudness" — essentially the level at which a song is recorded — has notably increased.
So yes, that's nerdspeak for "your music is less interesting and more deafening than it has ever been." Perhaps these nitpicky scientists could be soothed with a nice, full-volume screening of Part of Me 3D?