Establish a Hornbostel Sachs three level flowchart/decision tree for new instrument additions.

This relates in two means to the necessity for a taxonomic divide between instruments; for us to articulate these differences, and for users (or our later workers processing items) to potentially make decisions about how to help future searches on UMIL happen.

I think this is important to keep in mind until we establish a clear tagging system (if we end up wanting one) for searching for instruments; e.g., tagging a trumpet as "brass" so a user can search by instrument material type or by HBS numbers. I'm uncertain how familiar some of our users will be with HBS or Dewey Decimal to intuitively figure out searching from there, and so think a chart for users and for our own internal workers to add at least three levels of an HBS number would be immensely helpful.