No singing yet but damn close.
The vise backer is installed. All that is left is making and fitting the chop and making a tool tray.
I figure the chop is a couple or three hours (which means at least 6) and the tool tray a couple more. After those jobs the bench will be functional, just needing a little clean up. You may see joinery markings for months, clean up is usually pretty low on my list. I'd lot rather be making things.
The vise backer with the vise hole and the parallel guide hole:
My back is telling me it is whisky time in Tucson.