Strange, though, that even a 61 arranger includes the 'full keyboard' chord triggering options with On Bass, obviously designed for piano and Rhodes players to play normally (as much as possible, anyway!) and have the arranger's chord detection to come up with the correct backing chords.

So, despite not having enough keys to play a full piano part, it includes the software specifically FOR that function...

You would think, if Ian's system is in the majority, that they wouldn't need that full keyboard detection at all...