Ty my friend. More to come!

@@phillc Hey Bro, thanks a lot for your extensive response, this helped me a lot, all the best to you!

You're absolutely right, having the main sound also on the left side at a low volume can be undesirable. To achieve the setting you described with the trombone sounding only on the ACMP part and not on the left side, please try this: *** Use the Split Point: The Split Point feature on the DGX-670 allows you to divide the keyboard into two zones with different sounds assigned to each. You can use this to effectively limit the ACMP range by playing the chords in the desired range on the left side and reserving the right side for the main voice, like the trombone. *** Here's how to do it: Press the [MENU] button. Use the cursor buttons to navigate to "Split Point/Chord Fingering" and press [ENTER]. ** Use the cursor buttons again to select "Split Point" and press [ENTER]. Use the [Data Dial] to adjust the split point to the desired octave where you want the ACMP to start. For example, setting the split point to C3 would limit the ACMP to the lower two octaves (C3 to B4). Press [EXIT] to close the menu. ** Now, when you play chords on the left side of the keyboard below the split point, they will trigger the ACMP, while playing on the right side will trigger the main voice (trombone). ** If this fails, please, check out my extended accompaniment video and let me know if it helps detect the problem: kzfaq.info/get/bejne/mNmbdpNyu9aWZZs.html