Here's the book, it's an interesting premise.
https://en.wikipedia.org/wiki/Human_AccomplishmentMurray ranks the leading 4,000 innovators in several fields of human accomplishment from 800 BC to 1950. In each field Murray identifies a number of sources (leading encyclopedias, histories and surveys) providing information about the leading figures in the field. The rankings are made from information in these sources. A raw score is determined based on how many sources mention and on how much space in each source is devoted to a person. Then these raw scores are normalized so that the lowest score is 1 and the highest score is 100. The resulting scores are called "Index Scores".
The book obviously wasn't written with the express purpose of saying "black people have never contributed anything of any worth to music." That's such a ridiculous mischaracterization, as if that was purpose of writing the book, geez...
It's interesting that you and many others trotting out obvious falsehoods these past few days think this is a wise strategy...
It's far more interesting to write about people that have done interesting, impactful, world-changing things. And that's what he wrote about, he didn't set out to write nor did he write the most boring book he could write, he wrote an interesting book about interesting people, actions, and ideas.
If the book doesn't have enough "diversity" for your taste,
No written language was ever devised in sub-Saharan Africa prior to outside influences.
There is no indigenous tonal music tradition in sub-Saharan Africa, apart from maybe singing. The only instruments native to the continent are unpitched percussion.
The wheel was never invented in Africa.
Sometimes reality is just reality.