In this lesson, students synthesize their learning from the previous lessons to address the module challenge. They demonstrate their learning about light and sound waves by creating a musical performance that incorporates light. Students also use the engineering design process to create additional musical instruments for their performance and explore ways to incorporate light in their performances. We recommend reading Chapter 3, which is included in this book selection and provides a Module overview and summary. A materials list, teacher background information, safety notes, standards, assessment, references, and resources are provided. This book selection also includes the Table of Contents, About the Editors and Authors, Acknowledgments, Appendix A, B, and C, and Index.