Robuta

https://scalelibrary.org/scales/divisions-of-the-tetrachord/303_C23/ 303_C23: Chromatic tetrachord 512/481 * 481/450 * 75/64 | scale-library 3-note 37-limit just intonation scale from Divisions of the Tetrachord — John H. Chalmers, Jr., Divisions of the Tetrachord, Frog Peak Music, 1993.. chromatic tetrachordscalelibrary https://scalelibrary.org/scales/divisions-of-the-tetrachord/285_C21/ 285_C21: Chromatic tetrachord 51/47 * 47/45 * 20/17 | scale-library 3-note 47-limit just intonation scale from Divisions of the Tetrachord — John H. Chalmers, Jr., Divisions of the Tetrachord, Frog Peak Music, 1993.. chromatic tetrachordscalelibrary https://scalelibrary.org/scales/divisions-of-the-tetrachord/158_C5/ 158_C5: Chromatic tetrachord 40/39 * 39/37 * 37/30 | scale-library 3-note 37-limit just intonation scale from Divisions of the Tetrachord — John H. Chalmers, Jr., Divisions of the Tetrachord, Frog Peak Music, 1993.. chromatic tetrachordscalelibrary https://scalelibrary.org/scales/divisions-of-the-tetrachord/236_C15/ 236_C15: Chromatic tetrachord 40/39 * 273/250 * 25/21 | scale-library 3-note 13-limit just intonation scale from Divisions of the Tetrachord — John H. Chalmers, Jr., Divisions of the Tetrachord, Frog Peak Music, 1993.. chromatic tetrachordscalelibrary