Industrial metal with a cinematic, emotional atmosphere. Mechanical, chugging guitar riffs and metallic percussion in the verses; build into large, melodic, anthemic choruses with clean vocals. Begin with a slow machine pulse, metal grinding, mournful piano and distant bell tones. Gradually add distorted guitars and industrial drums, as if a giant engine is starting. Let the arrangement grow heavier as the characters discover the sun has gone out. Keep vocals clean and expressive throughout. Make the final chorus powerful and defiant, then end with the machine stopping and a faint human chorus. Professional studio recording, clear vocal and instrument separation, balanced mix, tight drums, controlled low end, no muddiness or clipping.