This tells a story about a child who is left home alone (with an unexpected guest). the bass part consists of most of the characters' voices. The lower bass melody is the robber(being sneaky). The upper bass part is the child's voice as his concern grows until he spots the intruder and calls the police. The treble part represents the home theme (except for when the child calls the police). The key change represents the police arriving at the scene and taking the robber away. Then the home theme resumes until the end.