Singing is a form of rehabilitation for neurological impairments. Neurological impairments following a brain injury can be in the form of apraxia – loss to perform purposeful movements, dysarthria, muscle control disturbances (due to damage of the central nervous system), aphasia (defect in expression causing distorted speech), or language comprehension. Singing training has been found to improve lung, speech clarity, and coordination of speech muscles, thus, accelerating rehabilitation of such neurological impairments. For example, melodic intonation therapy is the practice of communicating with others by singing to enhance speech or increase speech production by promoting socialization, and emotional expression.