"Advertise" - as a possible solution:

...it was used to advertise the party's held / thrown / organised, etc. by the European aristocracy in Ghana...

Or "advertisement".

Although, wikipedia uses "describe":

"Early split: guitar-bands and dance highlife

The word highlife comes from the 1920s, when it was used to describe parties held by the European upper-class to which the locals aspired. There were two types of highlife at the time. Dance orchestras played at the parties of the elite, while poor, rural guitarists played a kind of often-scorned music that was also called palm wine music (the term palm wine has referred to multiple styles from West Africa, but is now more commonly associated with the popular music of Sierra Leone). Originally associated with the Fante people, the guitar-based highlife spread across the country (and, to a lesser degree, abroad)."

ref. http://en.wikipedia.org/wiki/Music_of_Ghana