<< How does one use this feature in either program with any degree of confidence? >>

In BIAB, which I believe is better integrated with BIAB that should make analysis easier and more accurate, a user can apply advanced settings to help enhance the chord analysis accuracy.

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BIAB Ultra Pak+ 2024:RB 2024, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.