# User:Robertinventor

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“ Composer Kraig Grady talks about his long association with Erv Wilson and explains some of his work including Moments of Symmetry, Combination Product Sets, the Scales of Mount Meru and the generalized keyboard. He describes Erv Wilson as the most influential person in his life both musically and philosophically, the realization of his his tunings and acoustical instruments, and the documentation of his work. According to Kraig Grady, Erv Wilson's main accomplishments are almost like a Unified Field Theory of microtonality mapping tonal terrain and plotting different types of scales of any size or interval you may want to use. The music in the video is composed by Kraig Grady who also maintains the Wilson archives. The film is by Stephen James Taylor. For more info on the Erv Wilson documentary Surfing the Sonic Sky”**Description:**

“Take a walk with UC San Diego astrobiologist, Probiotic Chemist, and Microtonal Music Theorist, Dr. John H. Chalmers, as he describes the musical mathematics of some of Erv Wilson's pitch structures. He describes Erv Wilson as "the most intuitive" mathematician that he has ever known and describes how this intuition led him to understand sophisticated mathematics done formally by others. The correspondence of projections of scales to projections of higher order polytopes and polychorons, the six dimensional eikosany projections, the equivalence of the Scale Tree mathematically to either the Viggo Brun, the subtractive version of the Euclidean algorithm, or "continued fractions", multi-dimensional geometry, higher arithmetic, discrete mathematics, combinatorial math all just came to Erv Wilson intuitively in his charting of galaxies of pitch structures. Directed, edited, and music scored by Stephen James Taylor. The music in the Dr. John H. Chalmers Interview employs Erv Wilson's CoPrime Grid, Moments of Symmetry, and 31 Equal Temperament.”**Description:**

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