Some time ago we spoke about Matteo Nasini’s resonant installations. Rarely we see things like this and it’s the same for the video here below. He wrote about it: “In the italian countryside a flock of sheep are taken in hostage and hypnotized by a hostile frequency, but an aeolian infiltrated resonator, with the help of the wind, will try to release them”.
Caosempatia.blogspot.com is his blog. You can find other aeolian resonators and maybe things will seem more clear.