Re: Why won't retard work when not in top staff.
Reply #1 –
Tempo, of course, exists at the Score level. There can only be one Tempo in effect at any point in time. Scanning "on both sides of the variance event", seems to happen at the staff level. There is nothing inherently special about the top staff as regards to Tempo and Tempo Variance.
I don't know if this is a change. I put invisible "ritards." only in one staff and a Staff Italic "rit." on each staff. It is easier to get text to align down the score.
Tempo and Tempo Variance are not presented as clearly as they might be, but I don't want to get into that area until you have a satisfactory answer to your question.