We took a ‘real world’ approach to the backing chords, typical of what a guitarist or pianist would play at a gig, with some of the voicings adding extra notes not specifically described in the chord quality. Typically they also leave out the root (especially in jazz). We did this to sound more realistic. The midi file is derived from this. We are aware this might not be ideal for some of you.
The voicing diagrams are more accurate showing the notes in the chord quality.