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This isn't really accurate. Do you know how the guy who did this study got his data? He compiled a list of college facebook users' favorite musicians then charted it based on the AVERAGE sat scores from their colleges. But carry on, getbig.
Basically all newer mainstream music is comprised of cleverly written nursery rhymes to keep your brain dumbed down to the level they want it at. Put on some classical instrumental music and relax. You will be surprised at how well you feel!