Thanks for that opinion Allen.

I grant you that these characteristics can not definitively determine if songs or music originates from a person or persons from the African Diaspora.

My point was that these are generally listed in books I've read as signature characteristics of African music [I'm not sure if ululation belongs on this list for African American music if that term means the chanting of high pitched sounds that I associate with Arabic and some South African music].

And I would hasten to say just from personal experience it is evident that all African music {including African American music} doesn't have all of these characteristics.

Note: I forgot to add the use of the falsetto voice for men that is also found in African American music {think Smokey Robinson}.