text: {"frequencies":[261.6255653006,284.69629445872,309.80145226022,337.12043918596,366.84847565362,399.19799705513,434.40017432099,472.70655602525,514.39088038704,559.75102196641,609.11112257023,662.82390755693,721.27320639821,784.8766959018],"description":"13-tone equal division of 3/1. Bohlen-Pierce equal approximation"}