This group of folks, who go by the name of Untravelled Path, actually invent their own instruments.
I’ve uploaded one song from their CD above. Double click on the link and then click on the page that appears again. At that point the RealPlayer player should appear.
Here is part of an email that they sent (each of the bold phrases are links to various places on their site):
As for information about our instruments, well there’s a general overview of our instrument craft and the philosophy behind it on the Our Instruments page. The Kalimba Family page details the evolution of our kalimba style instruments. The Bowus Family page does the same for our stringed instruments. While the Shoki Family page has a few words about how these flutes came into being and the way we use them.
Beyond that the Our Recording and Microphone Placement pages talk at some length about how we have recorded, edited, and engineered our CDs. The long Doing Music Differently page describes our musical evolution. The Indian Music Scene and The Street Singer pages give some background about when and how our musical world view started to develop. Pages like Notation, Slow, Low, and Varied, Performance, and Practice might be described as providing our musical philosophy. While the Unspecialized page tries to tie it all together…..
I realize all this is perhaps a bit overwhelming, but in your note you do ask “if there is any material….. posted on the net……”. As you see there is quite a lot.