Found this article:
Music Reduced to Beautiful Math
Interesting concept, but like most news today any actual useful meaning is hopelessly diluted in an attempt to make the article "lay friendly". I tend to believe that the blame should fall squarely on the journalists, but some of the quotes clearly give the impression that the researchers are only outsiders looking in on the world of music. The both premises and conclusions seem fundamentally flawed - classical music equals three-note chords and jazz equals four-note chords? I sure hope this is just journalistic error and not the real basis of the study.