Because music tickles the same brain system as sex and drugs.
“The fact that music listening triggers a well-defined neurochemical response suggests an evolutionary origin for music,” Adiel Mallik writes, with the caveat that you shouldn’t over-interpret the results. “[I]t is also possible that music has developed to exploit an already existing reward system that evolved for other purposes, such as recognizing and responding appropriately to various human and animal vocalizations,” researchers add. Like the saying goes, one species’ howl is another’s bass drop.
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