Consider the same piece of "sheet music" delivered by different conductors, eg., Beethoven's 5th: https://www.youtube.com/watch?v=1lHOYvIhLxo&t=24s https://www

Consider the same piece of "sheet music" delivered by different conductors, eg., Beethoven's 5th: https://www.youtube.com/watch?v=1lHOYvIhLxo&t=24s https://www.youtube.com/watch?v=1lHOYvIhLxo&t=24s https://www.youtube.com/watch?v=9aDEq3u5huA https://www.youtube.com/watch?v=9aDEq3u5huA Sheet music is a guide for human beings who understand "musical context" to, with much leeway, create a cohesive sound. The sound created does not have a deterministic relationship to what's written, or else, why have any live music at all? And, more importantly, even if it did deterministically produce the same "sound", that sound is layered to us by our prior familiarity with instruments (, room geometry, etc.). We aren't deconstructing it by "mere frequency", but by meaningfully parsing out & grouping frequencies. There is no naive algorithm to do this.