I'm playing my acoustic guitar, a 26-year old yamaha cg-100a, fingering in d at 80bpm and this recording can be looped seamlessly. This was recorded with a samson c01 microphone plugged into a behringer u-phoria um2.
Sounds like a plate being dragged. This isn't actually a recording of a plate being dragged, it's a whole different sound being edited to the point where it sounds like this.
This melody describes the feeling of anxiety and creeping hysteria. You're in a club, maybe on stimulants, you're alone in a crazy and chaotic mass of people. They hate you, everyone hates you. You hate yourself.