Nice collection Orf. I thought it was the field recordings but, it's all studio recordings from the 20's and 30's! Just a sample from one of the reviews:
"Music is ill-suited to being described in words, so I'll use an entirely different experience to try and convey what listening to this Anthology is like.
I once knew a fellow who had grown up on Bechtel construction project sites around the world. As a kid playing in the dirt at these sites, he'd collected a box full of those stone tools that humans made and used for something like three million years. I found that once I had turned one of these slips of chipped obsidian or shale over for a moment, it settled naturally into my hand. There was a spot for my thumb, another spot for my forefinger, and my hand was making a scraping or digging motion with the thing. The tool and my hand still remembered their ancient partnership, without any volition from me. This sensation was simultaneously disturbing and satisfying and made the hair stand up on my neck.
This sensation is very close to what I feel listening to this anthology. You will not hear the familiar, highly produced music we're now so comfortable with. You will hear the voice and sound of music as it has been for millions of years -- and you will recognize what you are hearing as being utterly, essentially human."