As the title implies, there are essentially two types of material - one which has a forceful, rhythmic character and the other, largely featuring the soprano saxophone, is more relaxed with slow moving, almost static harmonies. In revising the piece for publication and performance today, I have made one or two small alterations to the scoring, 'notated out' one or two sections which had been aleatoric, but overall have tried to retain as much of the original character as possible.