David +1 Thank you:) I am getting there.

But nevertheless, I like to get my "bones" be as close as possible to what I want before moving to DAW. Especially things like:
Distinctive intros, style changes at bars, bridges, use of holds, stops for breaks, interesting endings....etc and most importantly to see it done in one project/one song.

Or even as you mentioned, regenerating single instruments and saving them as A,B,C... Question arises right away. How do "re-generations" affect changes at bars/ mutes, style changes. Interesting stuff.

Just curious how people do things, to gather some ideas of workflows etc.