Since I've been in the music business--actually since the time I was studying music at UNT, I've been lucky enough to be around people who are creating great musical arrangements for big band. Most of these charts have been created purely for the love of creation and the drive to make something unique. Most of these charts are played occasionally by one band and spend most of their time on a shelf--innaccesable to the rest of us. Arrangements with any complexity are often regarded as unpublishable by the bigger companies that do most of their business with public schools. If a writer does get some advanced charts picked up, they are often asked to comprimise the original intent to make the chart more universally playable. This is fine, but it doesn't encourage the creation of new pro-level charts.