To appreciate music is to appreciate language in its abstracted form. It is to appreaciate all the elements of communication separated from their assumed purpose of relaying a clear-cut peice of information in a precise and documentable manner. Without this necessity we have the elements of rhythm and tone and harmony and pitch functioning still to communicate, but now, it is to stimulate the right side of the brain rather than the left.
I think that with regular old human communication, there is this necessity to put forth some solid idea, but the other elements are present also. You want to have a sense of timing and pitch and entertain that right brain also, but music takes out the first part to focus on the abstracted elements, perhaps with the goal of enlightening us to enjoy the music that we make with each other everyday by just talking.