A friend's wrote a book on prehistoric flutes. Her Ph.D. dissertation was on the subject, [1]. Unfortunately, I believe that it is out of print.

[1] Lana Neal, The Earliest Instrument: Ritual Power and Fertility Magic of the Flute in Upper Paleolithic Culture, https://www.amazon.com/Earliest-Instrument-Fertility-Paleoli...

For those interested in prehistoric instruments, I suggest the research by Dr. Lana Neal. It is a book (based on Dr. Neal's Ph.D. thesis) on the Paleolithic flute. The evidence includes, quite naturally, radiocarbon-dated instruments and fragments, but most interesting to me where the cave paintings that include quite clear depictions of flute players.

[1] https://www.amazon.com/Earliest-Instrument-Fertility-Paleoli...