I'm a gigging keyboardist and have been playing VSTs at live gigs for a number of years, even though my knowledge of MIDI is fairly basic. I've recently acquired a new GSi Gemini sound module that is controlled by MIDI, either via a wi-fi editor running on a web browser of a tablet or phone etc (very 21st century), or by assigning control changes to a hard midi controller. I'm using one M-Audio midi keyboard controller (which controls the Gemini just fine) and one keyboard, a Roland VR-09 (which does not). The VR-09 has a separate 21 page 'MIDI Implementation' manual that can be downloaded, but I have to say it doesn't mean that much to me because i don't really understand MIDI that well (although I want to understand it better). In particular, the VR-09 has a nice set of 9 drawbars which are currently sitting there doing nothing, when I want to use them to to control an organ synth on the Gemini. Looking at section 4 of the VR-09 MIDI Implementation manual (Transmit Data) I get the impression that very little CC information can be transmitted by the Roland VR-09, so maybe I'm expecting too much, but I could be wrong. Can anybody advise me where and how I can educate myself to understand this better?