This is based on an idea of Christopher Bailey – compose something for his least liked chord, the C-G-C# triad. He asked if there is a tuning that could be based on this, and several theoreticians came up with some ideas. Mine is that the Partch Tonality Diamond, taken to the 15 limit, has many instances that approach this triad. Here’s a graph of the C overtones using Sagittal notation. 
The Finger Piano uses several different chords from this list. The Alto Flute plays whatever makes sense.
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This is a work in progress…
