Do these images ring a bell? Music is used in communication as well as art, and entertainment. From its written form, it can communicate with the aspiring musician to carry the composer's music across to the listener. Music still bears an extensive communication role in society and has a diversive function in many cultures. Throughout history it was used for organizing mass armies on the battlefield. It is still used in military parades today. It announces weddings, or funerals. It can be used to enheighten pathos, or suspense in cinemas, on TV, or theatres. It can be used as ringtones so that you know someone is calling you, or sent you an e-mail, or message. Music also has other assets that don't have much to do with language, such as relaxation, and meditation. It can also be used to annoy your neighbours, such as in "Fiddling for Beginners".
Music cannot become language.. but a piece can speak a thousand words. Ive been making music ever since I was around 14 and I would have to say that what comes out of me in the form of music is the most profound reflection of myself I could imagine.
music is of the right hemisphere of the brain, verbalized communication of the left. It depends on how you infer the word "Lanugage", which simply is, a means of communicating ideas. In which, yes, music has been a language for a long time, I taught my dad how to rapidly communicate effectively, then a again, we're both software developers, so we have an enormous advantage.