Hi Joe, Okay, I'm now certain that what's going wrong is entirely in the abstraction being made polyphonic - and it isn't, as I thought, u_dispatch with symbols or lists; that's fine.
For instance, if I replace the example for u_makepoly, using s_buzz in place of s_rhodey, I get similar answers. So I must not entirely understand what prerequisite there is for the patch being made polyphonic. I tried to ape s_rhodey before, adding two inlets and one signal outlet (two signal outlets could be used for stereo, of course), and adding:
two-float list processed as the note event, etc.) 2. u_loader to instantiate the patch itself
But maybe I'm missing another step?
Peter