Originally Posted By: MarioD

Measure 21 = C#m - The notes that are being played from the highest to the lowest note are E-C#-G#-C#



Mario D:

21bar = 3
3=III=C# (in A major)

This is my help query through Scaler2.7 software, it should be correct. But that's not the point of the question.

If the KEY does not change, I want the sound to be what I want. I can change 3 to 6 at the position of 21bar, which is to change vi in E major to VI, which is 6=C#

So, in the SUG file, starting at 21:
6 - 2m - 1 - 4
6 - 2m - 3m7b5 - 4

The above is the writing method of E major, which is the same as the sound of A major.

But I prefer to understand it as transposition.
If BIAB can change E major to A major.
So starting from 21bar, what needs to be written is:
3 - 6m - 5 - 1
3 - 6m - 7m7b5 -3

The current situation is that I change the KEY through F5. Changed from E to A at 21bar.
I generated it countless times and I didn't feel like a transposition.

Although the notes are similar, only a few notes have been changed. But the chord relationship has changed fundamentally. This may be the key to the difference in hearing. It is also the reason for transposition.
This is my own understanding. I can't find any theoretical basis. Maybe my statement is wrong. This is not the point.
Now go back to the original idea. Can BIAB realize transposition?
Does the forum have the function @ official staff?

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