Research at Drexel University in Philadelphia found that music therapy and pre-recorded music reduced pain more than standard treatments in cancer patients. This Study with more than 50 trials to review, was one of the largest ph.D. Joke Bradt participated in. More than 500 participants reported, that they experienced less pain through music therapy. „The evidence suggests that music interventions may be useful as a complementary treatment to people with cancer.“ so Brandt. The results show, that music therapy may increase patients´quality of life and influence mood, pain, blood pressure and heart rate positively.