Updated to include the new 3rd movement.
It was originally a concerto for 3 trombones. I thought it would be so much more fun to just let loose and write something "fun". And it's coming out as a divertimento for the three trombone soloists and orchestra.
The plan is now 4 movements starting with a little fanfare. It's quite simple, built on repeated leaping 4ths motifs, with a more lyrical middle section.
The second movement is a little choral, with the three soloists mostly functioning as a homogeneous group.
And the 3rd movement is a set of dance-like sections: a waltz, a burlesque, and a can-can (in 7/8). The Can-can is made of material from the preceding sections.
My plan for the work is to have the three soloists placed antiphonally as much as possible on the stage.
My dream would be to write a piece with the brass players scattered all around the audience, above and below, on all sides. This is of smaller means, so I'll settle for equidistanced on stage left, center and right.