Music has been proven to make people feel emotions and can even help heal in some cases. It can add value to one's life in several ways. Music therapy has been used to help patients deal with issues and express emotions that are otherwise difficult to express. Music can also help alleviate trauma by providing an outlet for creative expression. Playing favorite songs from the past has been shown to calm and cheer Alzheimer's patients, with some able to recall song lyrics even if they cannot remember other details. The brain's interaction with familiar music can offer glimpses of personality and provide moments of happiness.