OK, now I'd like to hear how a person sets out to create a song like this. Unlike the average song heard here that was generated by BIAB, and has one cohesive theme throughout, there's NOTHING about this song that remains constant from start to finish.

Where do you begin? Is it a cohesive idea to begin with, or the result of several iterations in which you systematically add the various conversations between instruments?

I would ALMOST guess that you started with a drum track and introduced instruments at different times (literally.. as on different days, so your musical mood didn't carry over into all the instruments)... but the fact that even the drum track does not remain constant makes me question that theory.

Please, teach me how to start with a blank sheet of manuscript and end up with something like this.