Yikes! Can't believe I left out the two Holst Suites! I'm dissapointed in myself.
Also,
Southern Harmony by Donald Grantham
Waking Angels by David Gillingham
Give Us This Day by David Maslanka
Niagra Falls by Michael Daugherty (ran out of David's)
Red Cape Tango by Michael Daugherty
Any movement of The Divine Comedy by Robert W. Smith
Fusion by Brian Balmages
In Wartime by David del Tredici
Hammersmith: Prelude and Scherzo by Gustav Holst
Symphony No. 1, "My Hands Are a City" by Jonathan Newman
Slalom by Carter Pann
Symphonic Dance No. 3 "Fiesta" by Clifton Williams
La Fiesta Mexican by H. Owen Reed
I Wander the World in a Dream of My Own Making by Christopher Theofanidis (there's a moutful..)
Vientos y Tangos by Michael Gandolfi
Suite Dreams by Steven Bryant (would go exactly behind Holst's Suite in Eb for obvious reasons..)
Eternal Father, Strong to Save by Claude T. Smith
Ecstatic Waters by Steven Bryant (you'll need an electronics set up, but it's well worth it.)
Ok, so I kind of like wind ensemble music. This should keep you busy for a while though.
Price Walden