Sometimes a very new instrument creation is impossible to describe, we must listen ...

M.Theremin playing his own creation :

https://www.youtube.com/watch?v=w5qf9O6c20o

Leon Teremin is a Russian inventor, best known for the invention of "Theremin vox", one of the first electric musical instruments (1920.), which is also the only instrument that can be played without any touch, by influencing with the hands the electromagnetic field created by the instrument.

https://www.youtube.com/watch?v=hDYvQ8FsZB4&t=707s

This fascinating music is from a seer named Gurdjieff, it is played on piano  and written inspired by near eastern melody...

Alain Kremsky recording is audiophile and very good, this is my prefered album but the six albums are all stunning and meditative and rythmically  well spoken for the soul :

https://www.youtube.com/watch?v=2ugh5ikkOXI

A master of the setar

Ostad Jalal Zoufonoun - Improvisation in Afshari

https://www.youtube.com/watch?v=q4GWnDA5u5E&list=PLnQJF3Qi_4_DT_NKFgfSy7pLhHb9W9Dka&index=15&t=136s

Duduk...

A mysterious very old instrument from Armenia...Hypnotizing and moving as a human voice...

Gevorg Dabagian

https://www.youtube.com/watch?v=y5tcbD5in7k&list=PLnQJF3Qi_4_DT_NKFgfSy7pLhHb9W9Dka&index=51

Iegor Reznikoff is a well-known specialist in ancient music/early Christian chant and acoustic archaeology, with an interest in prehistoric caves and Romanesque and Gothic churches. His work — encompassing architectural and corporal resonance, sound therapy, ethnomusicology, and ancient music practices — is credited with helping to create a new concepts and approaches in sound anthropology.

Reznikoff earned a degree in mathematics from the University of Paris in 1966, subsequently serving as a professor and lecturer in the field at universities throughout France. He gave his first concerts in the field of ancient Christian chant in 1975, and today is particularly noted for his unique interpretation of the Gregorian chant. He has also worked extensively on resonance in Palaeolithic caves and caverns, as well as in that of modern edifices. In the field of sound therapy, he explores the human singing voice as a means of addressing certain pathologies.

Reznikoff has given concerts and performed at international music festivals on ancient music and music of oral traditions throughout Europe, the US, and Japan. A professor in the philosophy department of the University of Paris X (Nanterre), he has also guest lectured in several prestigious conservatories and religious communities. He had the honour of singing before the Dalai Lama in Zurich in 1991, and in the Shinto ceremonies for the millennium festivities in Kyoto in the year 2000, as well as in exceptional architectural sites such as the Temple of Apollo in Delphos, Greece and in the Basilica of Saint Francis in Assisi, Italy.
 

Here an example of the recreated old christian way of singing, mesmerizing and mantraic,  BEFORE the standardization reform by Gregory the great :

Le chant du Thoronet - Iégor Reznikoff

https://www.youtube.com/watch?v=hTd4FE05h6I

Here by Reznikoff a recreation of the resonant singing in cave by prehistoric humanity painting in the wall and singing ;

https://spatialsoundinstitute.com/Voices-of-Resonant-Spaces-2020