I have been experimenting with algorithmic music from the mathematical point of view, not so much from music point of view, and I would like to point to a positive definite kernel for measuring the consonance of two pitches: $$k(a,b) = \frac{\gcd(a,b)^2}{ab}$$ The description can be find [here][1]. From the "sonification of math" point of view, I would like to mention the #InfinitePiChallenge where there [are given infinitely many formulas for calculating $\pi$][2] and the challenge is to pick one formula and sonify it. I did that with a few formulas, two of which I like to highlight: [Convergence I, #InfinitePiChallenge for Violin and Cello][3] [Convergence II, #InfinitePiChallenge for Piano][4] [1]: https://archive.org/details/measuring-note-similarity-with-positive-definite-kernels [2]: https://math.stackexchange.com/questions/4350394/formulas-for-pi-of-the-form-2-sum-k-0-infty-binom2kk-fraca2k1b [3]: https://www.youtube.com/watch?v=SwgNsadNlbs [4]: https://www.youtube.com/watch?v=vqSXkIJqdhM