Music is an interesting thing though isnt it. It only lives when someone gives to it breath, and yet this creature can be powerful, weak, good, or evil. When the music stops he returns to nothing from whence he came, as will all of us. Though is it correct to live for such a fleeting thing ?
Like you said, when music stops, it "returns to nothing from whence [it] came". But if it has an impact, it may be remembered and cause a life-long influence, just like the way people can. :) So yes, I think it can be good to live for such a fleeting thing. For people live for people, and they all return to the dust when it is time.