Music therapy has been proven to be of beneficial use to older adults all over the world. Dr. Hanne Mette Ridder, a musical therapy expert from Denmark, studied the importance of the roles of musical therapists and caregivers on the mental well-being of patients suffering from dementia. The use of musical interaction has been proven as a key factor in many countries for the improvement of older adults overall health. According to Karen Stuart, South Africa has poor quality services provided by hospital care facilities to elders dealing with dementia, therefore she discovered singing to be an effective method for improving patients well-being. The playing of classical music or therapeutic singing resulted in: enjoyment, awareness, and engagement. Providing a source of music in hospitals or care centers are valuable methods for contributing to the care of the patients, while also relieving stress placed on the caregiver and forming a bond between the patient and the caretaker. Also passive listening to personalized playlists is being promoted in dementia care.