Not only soldiers fight against enemy in a war. Actors and singers do it, too. Many books were written about the World War II. Those books are devoted to the exploits of the soldiers on the battlefield and in partisan detachments, to the selfless labor of workers of the home front in the fields and factories? But there are not so many books that tell us about theatres in the war. And the enemy had been crushed not only by the soldiers but also by the artists. Here, in this book you will see how operetta fought in World War II. And even in ghettos, in hell, music helped people to survive and to stay People.