What an interesting use case! And interesting composition.
One thing that's interesting about the AI violin cover is that I'm not sure those runs would be physically possible at that speed on a real violin. So that composition can _only_ be played digitally, I believe.
When I used to do larger more orchestral arrangements, I was constantly getting dinged by the instrumentalists that while they were theoretically musically possible, certain runs or passages were very unnatural on the instrument that I scored them on.
For a long time I really hoped that some of the more professional notation tools such as finale would add in an ability to analyze passages and determine how realistic/natural they were for the instrument that they were set to.
One thing that's interesting about the AI violin cover is that I'm not sure those runs would be physically possible at that speed on a real violin. So that composition can _only_ be played digitally, I believe.