To make an arrangement of a musical composition is to rewrite the composition for a new set of musical forces—to rewrite a wind quintet for string quartet, for example, or to transform a string quartet into a piano trio. In the process of arrangement, a piece may be altered in all sorts of ways, but the original composition always remains recognizable. And arranging is an art in itself—it can be done ingeniously and beautifully, helping us to hear a piece with fresh ears—and it can be done