So this guy had an awesome idea to design and create a type of record player that can read tree rings!
The actual sound is connected to what’s called a trigger. The trigger takes the frequency’s read by the scanner and play those same frequencies in a more familiar timbre. So in this case, it sounds like a piano!
There are some really interesting minor sounding harmonies in the areas of the tree where the rings show abuse. Check it out! Its pretty amazing.