I am a competent composer. I am trying to improve a particular skill: creating sequences of very fast notes that sound pleasant.
Chopin's Fantasie Impromptu
Chopin's Etude Op. 10 No.5
I have both read neuroscience articles and measured the speed at which the fastest notes can be (1) distinctly perceived versus (2) perceived at all as anything tonal or musical. Many of Chopin's pieces (including as those cited above) surpass the speed at which notes can be distinctly perceived yet are slow enough they are still musical/tonal.
My question: does anyone know of any books or resources that discuss the experience of fast notes? I am looking for something that might give me suggestions for how to make pleasing fast note combinations.
Remark: If you have never tried, creating fast sequences of notes isn't like creating a standard melody. As I mentioned, the brain processes the notes differently and so creating such sequences is actually a distinct skill in itself.
By "fast", I mean notes around 86 milliseconds in duration. That's about 698 ± 24 BPM and 11-12 beats per second.