Sieghard Weitzel wrote up a set of step-by-step instructions for doing what can be done in order to create a shutdown sound.  On some computers this is 100% reliable while on others it is anything from erratic (e.g., mine) to doesn't work.  But, that being said, it's worth a try:

https://win10.groups.io/g/win10/message/23429 

--

Brian - Windows 10 Home, 64-Bit, Version 1803, Build 17134  

    The real art of conversation is not only to say the right thing in the right place but to leave unsaid the wrong thing at the tempting moment.

          ~ Dorothy Nevill