U.S. Army Reserve Spc. Laura Crespo, a bandsman for the 78th Army Band, performs with the 78th Army Band Jazz Combo for the West End House Boys and Girls Club in Allston, Massachusetts, April 12. Musicians perform in a variety of ensembles ranging from ceremonial band to jazz band to small ensembles, playing all styles of music. They are primarily responsible for performing and rehearsing as a professional musician within different ensembles of an Army band.