It’s only possible, to my knowledge, to repeat one part of a song. You are describing two.

What I would do is copy the first 16 bars so you have A, A. This is a total of 32 bars. Then do B twice also, same way. All of that becomes once through the whole song. Then the number of choruses (default 3) means, three times through the whole song, each of which is AABB.


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