K, i have an isu in marketing due on monday, and i need to know the differences between how they market mainstream/underground music. I know the basics, but i have to put it into a 1500 word essay :/ any help will be appriciated.

mainstream music is played on the radio all the time, videos of the track on mtv. adverts everywhere for it. magazines giving it good reviews even if it is shit.

underground music is not advertised. people who like it know where to look for it though.