Kastner is a writer who is famous all over the world. He is a winner of Andersen Literature Award. He is an author of many well known children books for instance Emil and detectives, Annaluisa and Anton, Flying classroom etc.
His books are always funny and kind. I like his style of writing. I mean when u are reading his books u really see that it takes special talent to be a children writer.
This is a story about twins who met in a summer camp when they were 9 y.o. One girl lives with her dad (famous compositor) in Vein, capital of music, but the other knows only quiet country life with loving mother. They decided to change with their lives to know both of their parents. But suddenly girls find out that their dad is going to marriage.
Disney Studio used this book to make a film "Parents trap", but film is a little diffrent.