George Secor

George Secor (November 8, 1943 – March 2, 2020 ) was an American musician, composer and music-theorist from Chicago. He was the discoverer of miracle temperament and eponym of the secor.

As an inventor, Secor and Hermann Pedtke's Motorola Scalatron (1974) is an example of a Bosanquet generalized keyboard featuring a multicolored arrangement of 240 tunable oval keys, about which Secor said: "There is not much point in using this alternative keyboard for systems below 31 tones in the octave." However, "even if it were completely impractical musically, it would make a wonderful prop for a futuristic movie."

It is approximated in 31 , 41 , and 72 equal temperament .

s is a secor, q is the difference between 10 secors and 1 octave, and r is the difference between s and q. If the Miracle scale is 0 1 2 3 4 5 6 7 8 9 0' s s s s s s s s s s +q q +r q +r q +r q +r q +r q +r q +r q +r q +r q +r +q then the Blackjack scale is 0 >0 1 >1 2 >2 3 >3 4 >4 5 >5 6 >6 7 >7 8 >8 9 >9 <0 0' q r q r q r q r q r q r q r q r q r q r q this may also be viewed as a chain of 20 secors: >0 >1 >2 >3 >4 >5 >6 >7 >8 >9 0 1 2 3 4 5 6 7 8 9 <0 s s s s s s s s s s s s s s s s s s s s