Hi, Jerry! Thank for Your help, and you are right: "...knowing your equipment is key", but sometimes manuals not very clear about some specific settings. Roland E-09 is keyboard arranger with speakers and auto accompaniment, as I mentioned before, I had to use Orla with Roland June DS-61 and just splitting keyboard on two voices, upper and lower will work without any settings, you can play chords on left and melody on right, it will trigger all accompaniment and solo functions on Orla, just like MIDI keyboard. The problem was on both setting, I tried to change MIDI channels on Orla and did it wrong, also E-09 has it own MIDI settings. Most confusing part, on Orla it can be set: Piano, Fisa, Master, Split, Full keyboard. On Roland Arranger,Piano, Split. I got the right setting know, everything works fine, but still, not clearly understand how it works. Would be easier to use simple MIDI keyboard, but it is nice to have OrlaXM-800 like expantion, adding different sounding styles and voices to Roland E-09, which has 560 voices and 130 styles of its own. Thanks again. have a good day.