Great medical news for the classical music-loving rodent community may also mean good news for two-legged classical music lovers. According to a report from Miller-McCune, Japanese study exposed five groups of mice recovering from heart transplants to different types of sounds, namely opera music by Verdi, instrumental music by Mozart, New Age music, no music and "sound frequencies." The mice who were exposed to New Age music, no music or the sound frequencies rejected their transplants between 7.5 and 11 days after the surgery. The mice who were exposed to classical music, however, had much longer median survival much times: 26.5 days for the opera listeners, and 20 days for those who heard Mozart. The researchers say immune system regulatory cells helped prevent transplant rejections in the "classical" mice. Read more:Â Classical Music Boosts Heart Transplant Survival in Mice (MM)