So? It doesn't mean the composer can't write music that exceeds the ability of any human performer and still encode the nuance they intended into the performance.

Just because I can't humanly play Paganini's Caprices doesn't mean it's bad music.

If the composer writes music that is not even playable by himself, then this music is never played by a human. Therefore a soul to soul communication to the listener is impossible.

I challenge John Williams to play the theme to Star Wars on his own! The point bane is trying to make is that the composer can use MIDI to record parts of a performance and then combine it into a form which is then unplayable by a single person [Edit: or any group of people].

I don't even know what a "soul to soul communication" is intended to mean. It sounds like you are applying some mystic qualities to it. I think most of us here don't think that the act of performance itself adds anything to the quality of the sound of the music over and beyond the sounds that are recorded, and so a "recording" that is painstakingly generated note by note is to me no different from one that is played live as long as they sound the same. If a piece has never, ever been played live, it makes no difference to me.

This "soul to soul communication" you talk of has no meaning to me.

99.999% of composers write music they don't and can't play themselves. That's why techniques like this are appealing, because the composer can write the performance at the same time. The written music is the performance. There's no obtuse performer screwing up the composer's will in this scenario.

You have a fundamentally broken concept about music.