This question already has an answer here:
I just now encountered the 2nd example of the following:
- established publisher
- baroque period
- the piece is clearly in e.g. c minor (related to e flat major, 3 bs)
- the printed key signature shows less bs (here: 2 instead of 3), adding accidentals, where necessary
Some research in the internet gave these reasons:
- key signatures were not [up to and including Haydn] standardized for minor (due to melodic vs. harmonic variants, or possible blurring between Dorian mode and minor key)
- avoid intimidation of potential buyers/players
- tuning more problematic with increasing number of signature symbols
While I understand at least the first reason, I'm unsure, why a new edition would keep the old tradition.
Is there any further reason for the approach?
Does this practice have a name?