Answer:
Traditional sub-Saharan African harmony is a music theory of harmony in Sub-Saharan Africa In traditional African music, scales are practiced and thought of as Homophonic polyphony occurs when two different melodies are harmonized in the (Karlson E. Hester and Francis Tovey use the same phrase to describe it).
The texture would be heterophony, if the musicians have used
the same melody in unison. This type of texture has a line of which it only has
a single melody with its simultaneous variations. This type of texture could be
incorporated with two or more performers.
A principal of design that i see in the image is unity because the room represents the ocean and there are fish surrounding which brings everything together and balances out the message the author is trying to get across. hope that helps :)
