I just searched for it a bit, but all the sources I could find (twitter, pinterest, BlueSky) also don’t say where it’s from, except that it’s a flute piece.
I had the same problem finding the source of a gif where people on a beach tore off their own skin and flesh like they were clothes. First time it was posted was by some Spanish dude on Pinterest in 2010.
Years later I came to find out it was in a music video called The Killers - Bones.
Oh hey. I remember this solo when I played Shere Khan in 6th grade when my drama class did The Jungle Book. They wanted me to roar and lunge at the audience while Balloo yanked me around by my tail (which was a rope tied around my waist with a tiger tail sewn over it). All in the middle of a song I had to sing.