EACH MEASURE IS A SEPARATE EXERCISE. Master each measure in every key using the modulation insructions. This is a mind stretcher if there ever was one.  It is a compilation of notes that create shapes in music. String them together in modulations and you have patterns. The objective is to hear and move shapes around the spectrum of music at a moments notice. Very good to add to a very advanced improvisation tool box. It what was used for my Shapes and Patterns resource.