Our final soundscape, a full playout of the Forest 404 theme tune, composed by Bonobo. The track samples the whistling bird from the Sumatran rainforest recording that kick-starts Pan’s journey. Headphones are best. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Can you feel loss for something you've never known? An environmental thriller starring Pearl Mackie, Tanya Moodie and Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. Plus, take part in The Forest 404 Experiment to see how you respond to sounds of nature.