text: {"frequencies":[261.6255653006,269.10058145205,277.01530443593,285.40970760065,294.32876096318,301.87565226992,310.68035879446,319.76457981184,329.87571277032,340.11323489078,348.83408706747,359.73515228832,370.63621750918,380.54627680087,392.4383479509,402.50086969323,414.99227599406,428.11456140098,440.63253103259,453.48431318771,465.11211608996,479.64686971777,494.18162334558,508.71637697339,523.2511306012],"description":"M. Schulter, just/rational intonation system - with circulating 24-note set"}