C#7♭13
C# - F - G# - B - A
Why is it so complicated in SCALER 2? Is this correct?
There’s no bible of nomenclature. It is an F Major 9 with an augmented #9. If you take out the G# Scaler would recognise it as a C#7. I agree though that this could warrant a discussion down the track.
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Directly add this type of chord to the chord search. C#7♭13 is still frequently used. In addition, have you ever thought about using numbers to find chords? For example, C#7b13 is actually the third degree of A major. Therefore, when we determine the key, such as A major, we can enter 37b13 in the chord search.