John Chowning's (https://en.wikipedia.org/wiki/John_Chowning) work Stria (https://www.youtube.com/watch?v=988jPjs1gao) unifies timbre and scale structure about the Golden Mean as a musical interval. It's completion predates this work by Carlos by nearly a decade (1977) and the composition process apparently began as early as 1972 (https://brahms.ircam.fr/en/works/work/7459/). There are many academic papers available which analyze this work: https://laurazattra.com/2016/09/23/stria-by-john-chowning-th...