Ironically, there doesn't seem to be any record of Dorsey actually performing this piece. And after several tries (which never happened because of timing or agreements) and several revisions, it was set down and pretty much forgotten about until a recent re-discovery of this piece brought about new interest in it.

I don't think this particular recording has ever been available commercially so you probably get to hear it here first, roughly two months after it received its World Premier in New York.