Via the Open Data Institute. Groove is in the heart, but could music really be the best medicine? MediMusic uses artificial intelligence to create playlists designed to ease anxiety and painby reducing heart rates, blood pressure and cortisol levels. The service uses real-time health data and a machine learning system to craft individual playlists for patients and, when trialled by the NHS, saw a reduction of up to 22% in dementia patients’ heart rates.