My piece was created by sonifying the annual changes in the period of the Earth's rotation, measured in microseconds. There are three separate instantiations of that time series. Two (slaved to the left and right channel) are bowed instruments where the primary frequency is determined by summing a fixed component with another component controlled by the scaled time series, with random weights on each components. In addition, these components had modification to the bow location and pressure, as well as output gain. The third instantiation of the time series is a panning component comprised of a banded waveguide set to the tuned bar preset, with frequency intervals determined by the scaled time series. Because of the mechanics involved, none of the components are particularly reliant on the typical equal temperament scale.
Here is the recording:
If that didn't show up in your browser, the file is also available for download here:
Audio recordingHere are the ChucK files I used, as well as the data file itself. DataReader.ck is identical to the one provided online, and all the audio is run through Duo.ck (with its internal sporking behavior modified to fit my instrument choices and timing).
The data reader. The actual sonficiation code. Data file (.txt format)