I wholeheartedly disagree with your assessment of the value of music (I think it might be the most valuable contribution our species makes to the universe), but I do agree with your solution.
As somebody who enjoys music every day, attends live performances, and keeps up to date with some music blogs. I think it's an over assessment to call music the most valuable contribution our species makes to the universe. Nevermind the fact that we have no clue what our contribution is at all in the universe. Music is good, it's shaped societies, and the like, but so have many other things, and I don't think our species would've died off without music. TBH I think most people would barely notice after a little bit if music just disappeared.
I see music as emotion in the form of sound, but I can't say that I think it's of any grand importance to the universe.
Though I suppose that there's some slim chance that our radio emissions (many of which are music) might be noticed by other stars after some number of years.
