How to make circles from pyramids and lines

This is a lovely piece for written by one of our mentors Rosie. It was composed for Orgelpark in Amsterdam, it is for four organs spaced equally around the room with the audience sat in the middle.

https://soundcloud.com/rosieclements/how-to-make-circles-from-pyramids-and-lines?fb_action_ids=10154176050385427&fb_action_types=soundcloud%3Alisten