Medzy wrote...
Keep in mind that the tree rings are being translated into the language of music, rather than sounding musical in and of themselves.
Meaning they just put music over a wooden circle spinning in a record player.
Wood grain doesn't have grooves that go in a consistent circle slowly going to the center - wood grain has knots that make it go all over the place.
You may have noticed the camera, instead of of a needle.
As it spins, the camera views the rings- as well as knots and other what-have-you- and plays notes in accordance with waves and concentration of colour.
If it should appeal to thy tastes more, you may imagine it as a slice of a dryad's leg.