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| Evangelina-Wilson's 'Personal' Scale |
Erv Wilson stated "The Evangelina tuning commemorates the work done by Evangelina Villegas and Surinder K. Vasal with quality protein maize in Mexico, Africa, India, Japan and China". It strongly resembles a 22 tone harmonic version of his diaphonic cycles. It might be thought of as his adaptation of the 22 shruti system of India as well as an expansion on Boomsliter and Creel's work on "extended reference". Wilson over time replaced the 5 and 7 limit intervals with the colored harmonics listed. Often these are within a cent or two. This was one of the scales he maybe played the most at home and once when a pair of Mormon missionaries descended upon his abode, he used the opportunity to have them sing pieces from the Mormon hymn book in this tuning which went on for months. In this diagram, I have taken his pencil notes and colorized them to accent the 3 harmonic series contained within. The diagram has been inserted into
http://anaphoria.com/22tonescales.pdf where one can compare first his diagram of the 22 shrutis with other related scales he developed. The 7 limit one was used by a Los Angeles band 'Cypher' in the mid 80s on instruments built for guitarist Jose Garcia.
This 22 tone scale of Wilson's believed to be from 1967 was found in a series of papers, charts and scales based stellating Hexanies in i have not seen before. One particular method resulted in the example below which seems to form the core of the scale above. Wilson took the 1-3-7-11 hexany and stellated it with 5 and /5 to complete the 8 basic triads found within which results in the 14 tone structure to the left. The result of this type of stellation has unexpected results. for instance 4 other hexanies are formed each which occurs twice. All involve the added 5 plus three factors of the 1,3,7,11 set. Because of the relationship of most of the added pitches to this stellate being 3/2 above and below, to form this 22 tone scale. 4 more hexanies also appear. The result is one of many 22 tone scales that contain a great variety of compact hexany subsets. 
