I recorded this MIDI file on the BK-9 (currently in MP3 format for your review). It has a drum track and an E Piano.

Question: What is the code that will trigger the MFX for the E Piano within the MIDI track?

Let me know if you have experience with this, 'cause I'd like make that E Piano sound richer, as it does while I'm playing it live.

I hardly know anything about MFX, so hopefully Diki or someone else will chime in. However... if the MFX settings are stored with a "performance" (User Program), then there are ways to set up a foot pedal or push button that will call up a specific performance when pressed. You'll have to use performance holds to prevent other things (like the style) from changing, but it will achieve your intended effect.

Of course with all of those performance holds enabled, it will prevent you from using performances to change other while playing a song. So you will have to rely on one-touch settings or favorite tones for that purpose. My $.02.

Thanks Teds for your 2 cents input, you should round it up to 5 cents ...