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POPSThis is the rhythm of the heart.. "investigators did find subconscious reflex autonomous responses. Almost every musical crescendo induced progressive skin vasoconstriction along with increases in blood pressure and heart rate. Correlations between cardiovascular variables and music profile were particularly evident during the aria "Nessun dorma," which is characterized by 3 progressively stronger crescendos. "We found that there were a lot of correspondences, particularly during the part of the musical track that has those crescendos," said Dr. Bernardi. Conversely, during the slower or silent phases, there was progressive skin vasodilation and reductions in heart rate and blood pressure, indicating progressive relaxation."