Two trombones, 7 minutes of preparation before hand, one take , and one little recording studio. Nothing like jazz to brighten up the day, eh?
The genre is sort-of like Dixie (like The St. James Infirmary). The chosen tempo is just a little under 120 (I think it's more like 118). The chosen chord is Bb. The chosen instruments are a trombone and (in the background) a bass trombone. Like I said, no chord sheets, no pre-recording discussion, just playing.
You are welcome to give critique, but just know that there's no way I can easily repeat this exactly and I am not sure if I can arrange this sort of meeting again for a while, so be aware that I can't exactly change any problems you find. However, I am always open to new ideas or changes to the theme, key, or tempo (because if we do end up recording again, it is easy to change those).