Int?rn?t m?rk?ting m?? be a bit lik? dir??ting ?n ?r?h??tr?; th?r? are m?n? parts played by m?n? instruments ?nd wh?n they ?r? ?ut ?f ??n? ??u kn?w it, but wh?n th?? blend it ??n b? ?ur? ?nd sweet harmony.