I believe we live in a rational world where decisions lay in the hands of logic and not in the faith of tunes. I believe music can help save individuals, but not everyone in the world relays to music the same way. Music is an escape for some, and just entertainment for others.
Music in and of itself will not save the world. Human beings will save the world when they realize war, poverty and homelessness aren't worth it. The peace process is a long time coming, but it will happen eventually when most, if not all, humans have better a better quality of life instead of struggling to survive on a daily basis.