4 inventive pieces for percussion with expandable parts and flexible instrumentation. Not only are the works rich in texture and energy as-is, but the director or ensemble is encouraged to customize the music to fit their unique situation! Some examples of customization include: adjusting repeat structures to lengthen or shorten the piece; expanding or reducing the number of players in various sections to reflect the form of the work; changing instruments within the same family mid-piece; offering improvisation opportunities; and so on. Like a “key” that fits any lock, this book is full of educational and expressive opportunities, perfect for intermediate-level ensembles or their directors!