Chantal Grosléziat has devoted over three decades to researching how children are affected by music. As an educator and musician, her work includes the award-winning musical picturebook collection, "Comptines du monde" ("Nursery Rhymes from Around the World"), and the series, "Bébés chasseurs des sons" ("Babies Are Sound Hunters"). She resides in Paris, France. Laurent Corvaisier is a painter, illustrator and instructor at the École Nationals Supérieur des Arts Décoratifs in France. He has illustrated more than 100 children's books which have been translated into several languages. He resides in Paris, France.