Arthur A. Levine has published poetry and picture books for young readers including Monday is One Day illustrated by Julian Hector and All the Lights in the Night illustrated by James Ransome. He is also the editor and publisher of many well-known and beloved books for young people including J.K. Rowling's Harry Potter series. He lives in the New York metropolitan area with his family. Katie Kath is an award-winning illustrator from the rolling hills of North Carolina, and lives with her husband and their cat. She works primarily in watercolour and ink. She cherishes the memory of making music with her own grandparents, sitting at their ancient pianola, and trying to get it to play the torn-up scroll of Don't Bring Lulu."