Michael Mogensen (b. 1973) is a composer from Hagerstown, Maryland. His compositions have been played all over the US and the world, and have won him several awards. He is one of the featured composers in volume four of Composers on Composing for Band.
September was written in memory of the events of September 11, 2001. It was a finalist in the Columbia Summer Winds Outdoor Composition Contest. Here it is in live performance by the Peabody Wind Ensemble:
More info on September is available at C. L. Barnhouse publications.