I need a well-structured research paper exploring the benefits of music therapy for individuals with medical conditions such as dementia and Alzheimer's. The paper will primarily address healthcare professionals and should draw upon reliable sources including peer-reviewed journal articles and interviews with experts in music therapy. Scholarly articles are also encouraged. The paper should focus on three main areas: 1. Cognitive benefits for dementia and Alzheimer's patients. 2. Emotional and psychological well-being improvements. 3. Physical health benefits, such as reduced stress or pain management. Please ensure the information is scientifically grounded and clearly communicates the relevance and practical application of music therapy in medical care contexts.