Personally, I think I’m going to call this BS, or at the very least, taken with alot of artistic license.
It’s claimed that using a digital camera (a PS Eye of all things), and a computer, spinning a slice of wood on a record player, LP style, it creates this almost perfect piano. Honestly, it’s just too perfect of a piano sound for me. It’s interesting nonteheless, but I don’t think it’s 100% natural. Hell, I don’t even think that there’s any reason to think that tree rings can or should produce music. But who am I to say what’s art?