our rooms are in the basement separated by one thin wall. My bed is against the wall and at night I can hear him listening to his music.
Although they can still hear each other, the author isolates them. They're not in the same room, but they're near.
I sit beside him and read about death and God and the devil and war and sex and hate and love.
This is a sentence made up of terms with different meanings that explains what the brother has in common with sister and how it impacts her.
I picture forests echoing with laughter and shadows taller than souls.
This quote proves what the protagonist is thinking about when she hears the music. We'll be able to understand exactly what's going through her mind this way.
I lie on my back, hands laced behind my head and eyes closed because I know that’s exactly what he’s doing.
This highlights the two brothers' connection and how much he misses his sibling.
The music is hard and heavy with lyrics like poetry; he calls it heavy metal.
This is imagery and showing how the genre of the music he listens to. The main character is describing what he is listening to using one of the five senses, they are sensory details.