Music therapy for Alzheimer's disease
For patients with Alzheimer's disease, music therapy provides a beneficial interaction between a patient and an individualized musical regimen and has been shown to increase cognition and slow the deterioration of memory loss. Music therapy is a clinical and evidence-based intervention that involves music in some capacity and includes both a participant and a music therapist who has completed an accredited music therapy program and achieved credential requirements from an accredited certification entity such as the Certification Board for Music Therapists.
Source: Wikipedia — Music therapy for Alzheimer's disease (CC BY-SA 4.0)