Beautiful project by Bartholomäus Traubeck. Using a modified turntable he’s converted the data from the rings found in slices of trees into piano music. It sounds pretty nice too!
I’ll leave explaining the technical side to him-
“A tree’s year rings are analysed for their strength, thickness and rate of growth. This data serves as basis for a generative process that outputs piano music. It is mapped to a scale which is again defined by the overall appearance of the wood (ranging from dark to light and from strong texture to light texture). The foundation for the music is certainly found in the defined ruleset of programming and hardware setup, but the data acquired from every tree interprets this ruleset very differently.”
You can see more of his projects on his site here