I acknowledge a deep debt of gratitude to my coeditors: my wife Irene, and my friend and colleague Tom Draper. They have worked with diligence and insight to bring this work to completion. They have delegated the task of writing the Preface to me. As the scientific study of human development matures it is not only natural, but it is necessary to reach beyond understanding the ways humans develop capacities, to study the ways emerging capacities fit into the larger sphere of human undertakings. Music is one of the most significant of those endeavors. As I attend the several piano competitions...