This book explores theories of intelligence, learning, and motivation to attempt a better understanding of the many interacting factors affecting the lifetime development of whole and happy children in the 21st century. The focus is on justifying the increased use of music as an art form in early childhood education. The Breadth component analyzes Elkind's (2001, 2007) theories on the power of play and Bronfenbrenner's (1969, 1993) theories on ecological systems. These theories are synthesized with Gardner's (2000, 2006) theories of multiple intelligences, particularly musical intelligence. Musical intelligence is considered as one of the most important ingredients in a recipe for wholeness, stimulating both the joy of learning and the desire to be a whole and creative individual. The Depth section explores current brain-based research models and the application component offers a free framework and sample grant proposal for any individual or community to implement.