Hi a-z,

From memory, BIAB supports around 130 chord types for every key. The ones you list, though, are not part of that extensive repertoire. The names that Logic Pro has derived seem to be an attempt to provide some kind of nomenclature because the chords given are not standard names that are found on sheet music.

From a BIAB perspective, F#5 could be used for the first chord as a substitute. For the other two, since BIAB chords are 3+ notes, it's necessary to know a little more about the context of your music to be able to recommend a substitute.

To define a chord, it really needs to have a minimum of three notes. For example, the A-B that you give could belong to B7, B9, B11, B13, A9, Asus2, Am9, D6, Dm6, G9 just to name a few of many possibilities.

Regards,
Noel


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Audiophile BIAB 2025