G'day DD,
actually, I'm looking at it from a jazz improvisation perspective. In this context there are certain "standard" ending methodologies. While these are predominately related to jazz, they can, and often will, work elsewhere.

As an aside, and 'cos I'm too lazy to reply in the right place... In another post of yours you question some terminology - particularly "chorus". BIAB's usage is standard jazz, which in turn has it roots in history. The current use of "chorus" in modern songs is really referring to a "refrain". Strictly speaking a chorus is a repetition of the whole song, excluding only intro and ending/coda

Given that, AFAIK, BIAB has its roots in jazz then it is not unreasonable for jazz oriented terminology to dominate, even though "chorus" in this context is not strictly a purely jazz term.

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