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* well-tempered scale
| semi-tones |      freq | just | interval |
|------------+-----------+------+----------|
|          0 |         1 |  1:1 | I        |
|          1 | 1.0594631 |      |          |
|          2 | 1.1224620 |  9:8 | II       |
|          3 | 1.1892071 |  6:5 | iii      |
|          4 | 1.2599210 |  5:4 | III      |
|          5 | 1.3348399 |  4:3 | IV       |
|          6 | 1.4142136 |      |          |
|          7 | 1.4983071 |  3:2 | V        |
|          8 | 1.5874011 |  8:5 | vi       |
|          9 | 1.6817928 |  5:3 | VI       |
|         10 | 1.7817974 |  9:5 | vii      |
|         11 | 1.8877486 | 15:8 | VII      |
|         12 |         2 |  2:1 | VIII     |
#+TBLFM: $2=2^($1/12)