Carmen Gil is the award-winning author of more than 80 children's books, including Celeste, la estrella marina, El hada Roberta, !Que miedo!, Story of a Cockroach, It's a Pain to Be a Princess!, The Things in the Air and the award-winning La sonrisa de Daniela. Marta Munte Vidal is an award-winning author and illustrator of more than 15 books. She studied in the prestigious Escola Massana (Barcelona) and completed her education in Italy. Her books include Oso y su diente de leche, Todos duermen, 25 cuentos magicos para leer en 5 minutos and Kuku and Mwewe.