This essay is associated with my composition, "33132122321122233321321121231". Here I undertake a detailed investigation of the relationship of chance and choice, planned versus inevitable indeterminacy, the repositioning or restructuring of the composer's will, and the determination of creative space by structured randomness. I survey and select from historical, personal, and quantitative resources in creating and describing the system that generates the associated composition. A detailed account is provided, describing both the general approach and a particular outcome.