A system for musical interpretation and monitoring of physical and emotional condition through continuous measurement of cardiac and muscular activity, limb angles, and the patient’s emotional state. The system integrates a new, specialized musical instrument for trunk and upper limb rehabilitation exercises, a subsystem for monitoring physiological and biomechanical variables, a subsystem for indicating the progress of rehabilitation therapy, and a subsystem for recording, visualizing, and updating rehabilitation practices. The device allows for ergonomic adjustment and physical and functional adaptation according to the patient’s progress.