
The mind is always open to suggestions and thus when a person is
agitated or tensed, relaxing sounds, rich in alpha like frequencies, can
actually bring brain frequencies down from theta to beta to eventually
alpha brain waves, changing the overall mood of the listener during this
process.
It's a scientific fact: A relaxing melody can help a person
to get at ease. When a person listens to a piece of music that he finds
relaxing, he can focus on that, forgetting his agitation and tension.
His/her breathing slows down a well as the heart rate and blood pressure...