From Psychology Today: What your music says about your personality.
The question “What kind of music do you like?” is so revealing, it is the number one topic of conversation among young adults who are getting to know each other, according to psychologists Jason Rentfrow of the University of Cambridge in the U.K., and Sam Gosling at the University of Texas at Austin. Knowing whether a person prefers John Coltrane to Mariah Carey, or Puccini to Prince allows for remarkably accurate personality predictions, their research has found.
