Some might feel music is not critical information. There could be some validity to that view. However, is it wise to underestimate culture on the shaping of society? Music, like many arts, is am important component to human history.
I must confess this is one use that never crossed my mind probably because I never saw music as something that needs any form of encryption. This could perhaps be an area that could be tapped into in the future when the need arises.