Given Circumstances in Burning Monkey

Burning Monkey is set to  the late 20th century period, and you can tell that by what the characters say and that it's 30 years after the war. It's set at night but includes day and night flashbacks - winter period. Characters include a 48 year old man named Old who suffers from PTSD, Monkey who is 17 and has ADHD and ASBO, Shell who is 15 and pregnant with Monkeys child, and the musician who never speaks but follows the action and accompanies throughout.  He is invisible to Monkey and Shell but Old seems aware of him sometimes. He may be the spirit of a young soldier shot by Old.