You’ll need to set up the recorder to differentiate between Song Parts and Keyboard Parts in the Song Setup. I don’t have the manual here or my keyboard. There’s something in the manual though.

I think the shortcut is to call up the Performance before you play the sequence. But it has been a while since I used the MIDI recorder, I’m mostly using audio tracks these days. I definitely remember something I had to do in the Track Settings to make sure that it DIDN’T record the Keyboard Parts and change to the original sound after I tried to get it set to something else. Took me a while to figure that out!

The main problem is, when you think about it, the BK9 goes beyond the basic MIDI sequence limitations, as you COULD have the sequencer playing 16 different tracks/sounds and STILL have four more Parts for the Keyboard Parts. 16 Parts is supposed to be MIDI’s limit, so I definitely remember having to do something to get Recorder/Sequencer tracks to address the right Part.

The price of capability is complication! 😂😱🎹
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An arranger is just a tool. What matters is what you build with it..!