Diatonic Up/Down Keeping Degree Alterations doesn't play sound when single note selected

In implementing the KDA version of Diatonic Up/Down shortcuts, I didn't realize that there's no playback like with a chromatic up/down shortcut. Of course, there's only playback (not sure if that might be changed in the future) when there's one note selected and then shifted up or down, but with Diatonic Up/Down (while keeping degree alterations), there's no audio feedback and should be updated. Not only this but I don't think the piano keyboard was updated either! So not only no sound update, but no Keyboard display update, and those need to be fixed, and it should be as simple as invoking a few commands after doing the main action.