Description
Are these two key signatures possible in the new key-signature implementation (or have they previously already been possible)?
(1) Moving the accidental to a non-modern position on the clef:
(2) Doubling the pitch class at the octave:
Both are common in mensural music, where the accidental in the key signature refers to a specific pitch and not to a pitch class. Related to this, I can imagine that this key signature will be useful:
which means that the B2 pitches should be flatted, but the B3 pitches should not be flatted.
A somewhat related key signature:
which is related to 17th-century key signatures: the modern key signature would add one more flat (and remove more written accidentals) than the convention of the time. For example E-flat major would be notated with one flat rather than the modern convention of two.
It would also be useful to have a semantic/logical attribute on key signatures (and/or <keyAccid>
) for historical purposes to indicate whether or not the accidentals apply to pitch classes (treated as the default behavior), or to specific pitches (such as @absolute="true"
).