U.S. Army Reserve Spc. Laura Crespo, a bandsman for the 78th Army Band, performs with the 78th Army Band Jazz Combo during the Meet Your Army Week event in the Boston Commons, in Boston, Massachusetts, April 13. The U.S. Army offers 150 career choices. Army musicians perform in a variety of ensembles ranging from ceremonial band to jazz band to small ensembles, playing all styles of music.