For me, since I am the performer for all parts, all instruments, I have to 'build' a song. Most often, I am recording in sections and not a 'single pass' kinda deal but it depends on what the other instrumentation needs.

That said, I've tended to play the verse/bridge/chorus straight through. Not always but more often than not.

I guess I think in terms of orchestration than parts playing. I can hear what I want as the end result and I start playing what I think gets me to that sound.