Howdy Clyde,

I'm not Mark, nor do I play him on T.V.

However, I think the short answer to your question is "Mod Wheel".

GPO instruments rely heavily on the mod wheel for their dynamics, and the mod wheel actually gives more "life" to the performance than just volume changes will. You can use the MIDI graphing capabilities of Composer to achieve a lot with GPO instruments.

I'm attaching a couple of files for you that I put together to demonstrate this. The .not has some annotations about what I did where, so you can follow (hopefully it's clear enough) what I did while listening. You can also look at the graphs to see what's happening. The other is the .gpo file that I used with it, so you'll have the same starting point.

I used three different parameters - volume, note velocity, and mod wheel, and I changed them separately, and as a group, to show how they can be used separately or together to achieve different results.

I hope this is helpful, and if you have any other questions, just holler

ttfn,
Sherry

<center><table border=1><tr><td>GPO french horn demo
GPO french horn dynamics.not (12.4 k)</td></tr></table></center>
<center><table border=1><tr><td>GPO french horn demo
GPO french horn dynamics.gpo (37.5 k)</td></tr></table></center>