What does discreet surveillance mean

Consider the music used in the scene where scout meets boo radley for the first time, and answer each of the following questions in about two to three sentences. how would you describe the tone of the music while boo is hiding behind the door? compare that to the tone of the music when he is brought into the light and scout smiles at him. how does the music change? what effect does that change have on the way the viewer perceives the character of boo radley?

What is one way to appeal to ethos?

Which two shifts occur at the end of franz kafkas the metamorphosis