That's an intriguing idea. I can see the beauty of wind nudging a tone, but I’d keep a clear framework—maybe a lattice of resonant bars that the breeze tweaks. That way the gusts change timbre, not pitch, so the harmony stays intentional. Would you like a quick sketch of the mechanism?

Picture a rectangular frame made of light timber, about two meters long. Inside it sits a row of ten wooden bars, each tuned to a different note, like a miniature xylophone. The bars are mounted on a rigid plank so they don’t sway. A narrow wind duct runs along the back of the frame, funneling air from outside. When a breeze hits the duct, it forces the air through small slots that open onto the bars. Each slot has a tiny adjustable flap—think of a tiny valve—that you can set to let a specific amount of wind touch each bar. The stronger the gust, the more air hits the flap, which in turn nudges the bar just enough to brighten its overtones without shifting its fundamental pitch. The bars stay in tune because the flaps limit the airflow, keeping the vibrations tight and intentional. The unpredictable wind adds a subtle, shifting shimmer to the sound, while the overall chord structure remains steady. If you’d like, I can sketch the layout on paper and send you a photo.