Chord request: Diminished Major 7th

[Gatto]

OK, pitches are the same. However, I think the if you force a bass note, IRP will not walk the bass anymore and you get the same pitch on bass till next chord.
Viceversa, you should have bass walking over a diminished scale (hopefully). Moreover Ab7(b9) is an altered chord. Again I do not know how IRP will use this information for piano comping and bass walking. For sure, it is not the same as for a diminished chord.

[CyrilleB]

Yes of course, it's not the same. But I think this would be the closest you can get in IRP at this time.
Also to consider, is that when using slash chords with chords of 4 or more notes, IRP skips some of the top notes for polyphony reason I think, like having a CMaj7/G, IRP player would only play C/G (skipping the Maj7).