Well, I downloaded the PSR2000 manual and cannot confirm that you can control the chord recognition for a single bass note by entering a key signature. Where is this mentioned in the manual? Or is this an undocumented feature? Or wasn't I clear about what I was looking for?

I want (by way of example) to "tell" the keyboard that I am playing a song in the key of Cm. I want it to respond by selecting a Cm chord (instead of a CMaj chord)when I play a one-finger C in the bass section.

Now the PSR-2000 may have something that is as good or better than what I am suggesting. If anyone uses the AI modes, how well do they work?