Stuart,
A "Glenn Miller sound" is simply a piano; stand-up acoustic bass;
saxes - 2 alto, 2 tenor, 1 bari; 4 trumpets, 4 bones, a drummer.
Tomorrow I will have had my Genos for a week, but I've only
been able to spend three days with it; day one played demos.
I don't know how to make styles yet, but working on it. I had
to back up data, and then update my firmware to 2.01.
If you play everything into the Genos and layer, then you get
"the sound" with the parts I listed above.
Note:
Sometimes the lead tenor switches to alto, and sometimes
the lead alto player plays clarinet. It depends on the number
being played.