also, how did it feel when you came up that figure and it landed nicely in the song?
fine, but the next section or even the start time of the next section was not previously known until that riff existed. so it's not like the riff had any constraints, really. the bigger factor in my feelings was, 'i hope this next section works' because the section that follows was the 3rd major rewrite. there were 2 entirely different alternate endings