Music is good for the heart, according to an analysis of 23 studies. Patients with coronary heart disease enjoyed slower heart and breathing rates, as well as lower blood pressure, simply by cranking up the tunes. Music-listening sessions eased pain and anxiety, too. The authors didn’t report whether hip-hop, Beethoven, or any other particular type of music is best. 
Source: Cochrane Database of Systematic Reviews, Issue No. 2, 2009