Startups like MedRhythms and Sync Project are combining music therapy with technology—using neurologic-based treatments, biometric data, and adaptive soundtracks—to support rehabilitation from conditions like stroke, Parkinson’s, stress, and tinnitus. MedRhythms, for example, helps stroke survivors relearn gait through sensor-driven music playback, while Sync customizes playlists based on physiological signals to aid focus, relaxation, and pain reduction. Though promising and increasingly accessible, the article warns of overhyped or unproven apps in this expanding field, emphasizing the need for evidence-based solutions.