I need a peculiar key signature for a 16th-century edition

This is NOT my own edition, but one I am transcribing into Dorico to replace one that has gone out of print. The original editor chose to use a signature of one flat (b) in the upper part, but the lower part has the one flat (b) as usual plus a second flat (e) in parentheses. It’s a reasonable editorial decision, but I’m at my wits’ end trying to replicate it. A purely graphic solution would be fine — playback is not needed. I can see a lot of ways to deal with the accidentals on pitches, but not in the signature.

Has anyone done this? If so, how?

Someone else will be much better placed to give advice on creating custom key signatures but, once that has been achieved, to enter a key signature which only affects one staff simply hold down the Alt/Opt key when you press Enter/Return to confirm the key signature that has been specified.

I think I’ve solved it. I did use the option key trick to get an ordinary e-flat major signature into the second line, and THEN I painstakingly created purely graphic open and close parens for each staff, and dragged them into position, resetting the staff spacing after each addition. It seems to have worked — I’ll find out after I print the pages out…

If someone has a more elegant solution, though, I’ll be very glad to hear about it!

You can edit the Key sig and add a custom accidental with the parentheses. Then add a custom key sig that uses the custom accidental. Add local sigs as @StevenJones01 described.

Custom Key Sig.dorico (475.0 KB)

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Thank you, Craig! I was working in Dorico 4, because 5 is sluggish on my MacBook Air, but this is brilliant!

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Guten Tag,

May be this thread will help you :
[Legacy baroque key signatures]

In this one, a forum member has posted a ready-to-use library for entering such ancient key-signature layouts.