Marcus,

How do you play 3 or 4 keys with your feet?! I thought 2 would be the maximum. That's why I added the Major/Minor switch in OMB version 6 to make at least that chord types possible when playing single fingered chords on MIDI pedals. But if you can play more complex chords using 2 sets of MIDI pedals with the PSR2000 then I'm sure you can do that too with OMB.

There are 4 chord recognition modes in OMB: Full fingered, single finger, fingered on bass and full keyboard. In my view playing only major/minor chords would be sufficient if you have both hands available on the keyboard to make it sound like an expanded chord. Only diminished and augmented chords would raise a problem.

Jos