UUTAi Olena - Trance Jaw Harp - Horse Racing has been added as a related post - related requested by Eklek.

*related=https://videosift.com/video/UUTAi-Olena-Trance-Jaw-Harp-Horse-Racing

Seemed to me the pitch doesn't change until 1:32, but the sound does based on her mouth shape, like a jaw harp.

Yes, the jaw harp was excellent. Never heard one played like that and I'm impressed how long she was able stay so steady with it. As for the bagpipe, I can only take so much of that. That's totally the instrument. She does a great job playing it.

I've heard "Jaw Harp" too. Maybe that's a PC-ification. Okay Pho3nix, I'll bite...

Etymology

There are many theories for the origin of the name Jew's harp, one being that it may derive from its popularity amongst Eurasian steppe-peoples like the Khazars, perhaps being introduced to Europe from that direction. Another explanation proposed is that it is a corruption of "jaw harp", while a less likely explanation espoused by some is that its name comes from "juice harp" from the amount of saliva produced when played by amateurs. Both of these explanations lack historical backing, as both the "jaw" and the "juice" variants appeared only in the late 19th and 20th centuries. It has also been suggested that the name derives from the French "Jeu-trompe" meaning "toy-trumpet".[1]. Another origin theory stems from the fact that the instrument, which resembles the form of older handheld harps, has but one moving 'string' to be plucked; compared to the many strings in a typical harp, the owner of this instrument could be considered 'cheap' (typically synonymous with 'Jew' in times past).

The Oxford English Dictionary calls theories that the name is a corruption of "jaws" or "jeu" "baseless and inept" and goes on to speculate that "the instrument was actually made, sold, or sent to England by Jews, or supposed to be so; or that it was attributed to them, as a good commercial name...".[2]

Many names of the instrument, in English or other languages, refer to other musical instruments, cordophones, membranophones, or aerophones largely included.