Los Dudús preparan una fiesta secreta a la que solo se puede asistir si se tararea una contraseña. Pulsa los botones, escucha atentamente y& ¡ayúdalos a completar la canción! Una sorpresa te espera detrás de cada puerta. ¿Te atreves a abrirlas?;A new title that celebrates the joy of birthdays and celebrating together. Through interactive elements and the lovable Dudús, children discover kindness, generosity, and the happiness of sharing special moments with others. Open this interactive sound book and join the Dudús as they prepare a secret birthday party. Lift the flaps, press the buttons, and listen carefully. Each melody is a password that unlocks a door. Sing along and join the celebration!