What if Extraterrestrials Spoke in Music?

Might interstellar communication not be messages but music--perhaps a 600 part invention, each part on an adjacent frequency channel? If there were more conventional representation of frequencies for example, the full frequency range corresponding to the range between 1420 and 1667 megahertz would we have the wit to distinguish this music from noise. Other forms of such many-part interstellar musical inventions might exist which each A civilization provides one part. Might we be able to recog...