[Case of musical hallucinosis].

The theme of the article is a 68-year old patient whose case was diagnosed as organic brain disease complicated by musical hallucinosis. The patient was admitted to a mental hospital, several times, as suffering from psychic disturbances of the auditory hallucinosis type whose dominant symptom are musical hallucinations. The most significant in the disease pathogenesis of the described case turned out to be the recognition of severe brain injury.