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Support for tritone substitutions?

Tritone substitution is a super common chord substitution used in lots of music. It would be great to be able to easily input these, without doing any weird tricks with borrowed chords, because that’s not what tritone substitution is.

I’ve made a very quick mockup of how it could be implemented. When you select secondary dominant, you get the option to make it a tritone substitution. (subV/V for example).

Quick mockup

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@sylrs great idea. Agree that this would be a cool/useful feature, let me think about it a bit and see what it would take

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