Have you ever heard talk of piano technicians who either know or don't know "all the checks"? With ETD use being so common, even aural tuners tend to forget all of the possibilities. I had the idea once for a Chapter technical session to make all possible aural tuning checks the topic. I sat down and wrote out all that I could think of but left blank spaces for any more that may come to mind.This sheet will be part of my 2018 class at the Annual Convention on the subject of techniques for passing the Tuning Exam but anyone is free to copy and use it for their own study or as the subject of their own technical session. Please e-mail me back any more checks that you can think of and we'll build upon this list: billbrpt@charter.net