Patter music can be less structured than singing call music, giving a much larger range of music from which to choose. Often our patter music is more drab and boring than our singing call music. Sometimes this is necessary so that the dancers won't get distracted by the music. However, sometimes it is nice to let accomplished dancers dance to a good piece of music. Music from outside the normal square dance arena is another way of providing variety, getting away from boom-chuck, certain instrumentation, and other constraints we impose upon ourselves.