Sarah and the team go to the Max Planck Institute in Göttingen, Germany to meet scientists who are using the latest MRI and Motion Capture methods to find out exactly what goes on inside a musician's body while playing an instrument. Sarah talks to kinesiology professor Peter Iltis, head of the MRI department in Göttingen, Prof. Jens Frahm and motion capture specialist Erwin Schoonderwaldt.