Ms. Rachel, a #1 New York Times bestselling author, holds a master's degree in early childhood development and another in music education. She is a passionate advocate for children's rights and serves as an ambassador for Save the Children and Room to Grow. Mr. Aron, a Broadway music director, has composed for theater and choir and, of course, for littles. They are both recipients of the Make-A-Wish Chris Greicius Celebrity Award. Ms. Rachel and Mr. Aron live in New York City with their two amazing children, who inspire them daily.