Not posting these day, just curating and commenting.
Here is a link to an interesting article I found.
https://www.nprillinois.org/post/sound-sculptor-harry-bertoia-created-musical-meditative-art#stream/0
Here is another link - lots of info.
https://harrybertoia.org/
The sound sculptures are truly amazing. I was fortunate enough to get a tour through his studio to see and hear his art. There was this one "gong" is was like a large rectangular sheet of metal that had been hammered into a wavy shape. You tapped (you didn't his it hard) on it repeatedly, rather quickly with this relatively small mallet. At first you did not hear anything, maybe for the first 10 - 15 seconds, then a very low rumble started to come from the metal sheet that built into an extremely loud roar (like a lion), almost hurt your ears, then the sound was gone in an instant, just like that.
That barn was full of many amazing pieces of art, not just his sound sculptures but quite a few wire sculptures, sheet metal sculptures, and paintings, truly awesome. I hope you enjoy learning about Harry.