  ::I've had another go at it, now three paragraphs, starting in turn In music..., In Jazz..., and In dance music....  ::I'm taking your word for it that this convention (interpretive device) is assumed for all written jazz.  ::I'm not convinced we quite have swing time right yet. Surely as technical terms, swing time would refer to the method of writing the music, while swing rhythm would refer instead to the result as played? But that's the opposite of the way the article now reads. On the other hand, swing time is something many people who don't read music at all would think they could recognise. Difficult. Is it possible that the jazz fraternity and the dance fraternity use the words in exactly opposite senses? This wouldn't be the first time something like this had happened in music, see vibrato unit.  