Hi bharris,

We are at cross purposes - BIAB Melody channel 4 - if JABB is - say - 7 then that is the "mismatch" = BIAB 4 plays JABB 7

Do not change the supposed 7 in JABB to the 4 of BIAB

You will have to go by trial and error - but someone else here may tell you the correct channel in JABB but it won't be 4

You said earlier that you were using JABB as a DXi plug-in so you will not find it under Synth/Soundcard - you should find it by hitting the VST/DXi Synth Settings bar and you shound find in that page that opens, the correct driver in the top dropdown in that page

It can be frustrating to sort out that is why I dropped JABB and went back to midi instruments and then to Realtracks/RealDrums after they came out
jazzman

BIAB - RealBand - 2022
Windows 10 64
Zoo computer with 7i processor- SSD 1TB -2TB HDD
Roland keyboards