"Lift the curtain and embark on an exciting journey into the world of the future, where law enforcement agencies are governed by unusual rules. The novel "With a gun, sometimes with music" by Stephen Birt highlights the story of a private detective who decides to investigate a mysterious murder in a city where music has been banned and people communicate only with loud whispers instead of words. The book impresses with its unique atmosphere and intriguing plot, inviting the reader on an exciting journey into the beautiful and terrifying world of the future."