The technical name for a lead-in bar is evidently an "Anacrusis" and those notes are not considered to be part of the first measure (bar) and so would precede measure 1. Numbering them as 0 seems completely logical to me.
A quick search found this as one example:
https://ihsma.org/wp-content/uploads/20 ... asures.pdf
Here is another:
https://musictheoryde-mystified.com/b12 ... ckup-bars/
A quick search found this as one example:
https://ihsma.org/wp-content/uploads/20 ... asures.pdf
Here is another:
https://musictheoryde-mystified.com/b12 ... ckup-bars/
Statistics: Posted by fde101 — Tue Aug 20, 2024 5:17 pm
