I used your chord progression to recreate the problem. Since this piano Realtrack has a Realchart, I was able to see what was happening across multiple generations. BIAB seems to want to add an F-natural to the Eb7 chord, making it an Eb9 chord, except it's playing the 9 in the 2 position, rather than at the top of the chord. It even did this when I changed the song to use simple arrangement. I suspect that's where the dissonance is coming from.


John

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