In York ( UK) near to where I currently live, on a narrow street, a while back, and on a very breezy day that brushed everything along at a pace.. I often passed a shop sign, hanging up next to a shop and as it moved by the wind itself; then it would go back and forth creating an intriguing sort of shrill, high pitched, squeaking tune.. like a kind of funny jig; or dance suitable to play on an instrument.
So the musician who made it was no more than the wind itself!
Its a bit different to the Aeolian harp idea deliberately made to gain tones by design..
There's many times the environment can make its own music! Unaided.. and I am certain you all ( on this net.) Have your own tales to tell of unintentional music created by nature, or environment?