I seem to be talking to myself in this thread, but myabe someone will read it anyway. I have been looking for modules that would work with JAMMER Live in a simple configuration. I have found two classes of modules that meet this requirement. The first class, including the modules listed in my messages above, are basically midi interfaces with built-in sounds. The second class are modules with two midi inputs (and a midi thru) that provide for 32 midi channels. In this case, 16-track styles (!)along with 16-tracks of lead can be played at once. Examples of modules in this class include the Roland 5080 and the Emu Proteus workalikes (Proteus 2000, Extreme Lead XL-1, Hammon B3 module, etc.) I think the two midi inputs were originally intended for sequencer plus controller inputs, but JAMMER Live can serve instead of the sequencer.
In the cases of the Roland 5080 and the Proteus 2000-type modules, the capacity is for over 100MB of pre-loaded ROM sounds. In addition, both provide for custom sounds through RAM (Roland) or Flash ROM (Emu, but requires an Emu sampler to make the Flash ROM).
Correcting an earlier post of mine, the Roland Keyboard is the XV-88 expandable to over 100MB of sounds. JAMMER Live can be used to convert this sound monster into an arranger keyboard.
We have read rumors of a new Roland 1200 arranger. I am assuming these rumours are just wishful thinking. In this vein, I hope it accepts JV and XV expansion boards and has a vocal harmonizer. (As far as I am concerned, the D-beam controller can be omitted.)