Rharv, wow, I went through the entire index and looked at all the chapter headings and sort of skimmed the rest of it but since I was leaving for work, couldn't really get into it. That's the deal, alright. Sounds like it works the same as my Sonic Cell.
So Chris, since you're new at this, to clarify, yes, you have to make sure whatever you're using is sending either the "GM on" message or the GS reset. This would be anything from the software in your computer to a hardware sequencer. As has been talked about already, there's ways to access all of your patches in the Roland, not just the GM ones but set that aside for now. Lets get your Biab and/or midi files playing correctly using GM only so you can see and hear how that works.

Bob

Biab/RB latest build, Win 11 Pro, Ryzen 5 5600 G, 512 Gig SSD, 16 Gigs Ram, Steinberg UR22 MkII, Roland Sonic Cell, Kurzweil PC3, Hammond SK1, Korg PA3XPro, Garritan JABB, Hypercanvas, Sampletank 3, more.