Susanne Langer once wrote that "[e]very artistic form reflects the dynamism that is constantly building up the life of feeling." Music, she said, was neither the cause nor the cure of feeling, but a form of logical expression, or language, of emotions which could enable listeners to experience moods and passions they had never known before.
In other words, art teaches us something about human empathy, to identify with all human experience, and therefore, live more decently with one another.
In a new study (link) using brain imaging, researchers have identified how key aspects of musical performance cause emotion-related brain activity.
So please don't cut the music or art program at your school.