A recent journal article on the evolution of music provides an excellent summary on the dominant theories of how music evolved, and updated references to the basic arguments in favor of each theory. The lay summary may be found here: https://www.fastcompany.com/90569391/how-did-music-evolve-harvard-study-reveals-a-surprising-theory-no-its-not-a-sexual-mating-call , while the journal article appears here: https://www.cambridge.org/core/journals/behavioral-and-brain-sciences/article/abs/origins-of-music-in-credible-signaling/82D36C04DA04D96AD9A77EEAF4BBFB34 . Perhaps the most germaine discussion related to these theories relates back to a musically agreed upon definition of music itself (see Chapter 4). As is the case with so many evolutionary theories discussed in this book, ours is not to settle these questions, but to survey them in order to better understand the many factors that have evolved in our evolution that have possibly influenced our particular prediction to music today, and how we as artists use these factors to manipulate our audiences.

On page 117 I made the comment: "Homo erectus (and Homo ergaster) were the first species that habitually walked upright and the first that could run long distances." The intent here was to distinguish Homo Erectus from Australopithicus, as Homo Erectus/habillus had evolved sophisticated physiological and neurological mechanisms--similar to Homo sapiens--that allowed them to run long distances. Of course, the process was slow and continuous. What I should have said was "Homo erectus (and Homo ergaster) were the first Homo species to evolve fully developed mechanisms for running long distances similar to our own Homo sapiens species."

Göran Burenhult's data in chapter 8 suggests that human migration to North America happened about 15,000 years ago. New research suggests that this migration may have occurred 6,000 years earlier: https://www.nbcnews.com/science/science-news/fossil-footprints-show-humans-north-america-21000-years-ago-rcna2169 . Here is a link to the journal article: https://www.science.org/doi/10.1126/science.abg7586 .