- A UV sensor activates a low, meditative sine-wave tone that climbs in pitch as the sun rises and falls as the sun sets.
- A temperature sensor modulates a bass note that moves faster as the temperature rises and slower when the temperature drops.
- An anemometer, which measures wind-speed velocity, activates two pulsing notes (within the E major chord) that pick up the pace as the wind blows faster.
- Moisture—be it rain or snow or just good old Southern humidity—creates an electrical connection between two tiny brass probes. The resulting sound changes based on the conductivity of the rain, which varies from day to day.