Music therapists use music-therapeutic interventions to treat patients with behavioural disorders and pathogenic conditions to prevent, mitigate or eliminate symptoms and to change behaviours and attitudes requiring treatment. They promote and maintain or restore the development, maturity and health of the patient/client by music-therapeutic interventions. Music therapy especially provides help for people with with emotional, somatic, intellectually or socially induced behavioural disorders and pathogenic conditions, such as psychoses (schizophrenic disorders, bipolar disorders) and personality development disorders.