Reading the last 24 hours…
Tuning to the planet…
Each rod is a real earthquake of magnitude 2.5 or greater from the last day, pulled live from the USGS feed and tuned to a minor-pentatonic scale — the bigger the quake, the lower and longer its tone, so a great rumble reads as a deep gong and a small tremor as a high chime. Play it, strum it, or let the Earth play itself.