“After one week, the mice whose personal soundtrack featured Enya, one of the sound frequencies, or no music at all “rejected their grafts acutely,” the researchers report. Their hearts gave out 7.5 to 11 days after the transplant. In contrast, those exposed to Verdi or Mozart “had significantly prolonged survival,” the researchers report. Median survival times were 26.5 days for those who heard Verdi and 20 days for those exposed to Mozart.”