The very beautiful Swirls. The background hiss masks the weird electronic (interference) noises you get at the start on the QT 2.5 version. Never heard them? Well pop on your earphones and listen to opening 15 seconds. In the background you will hear them. Maybe somebody knows what causes these.
As beautiful as Swirls is my enduring memory of this sound is... well.. endurance. I can do THIS... I can do THIS... I CAN DO THIS.... as I reset the seven pillars for the seventeenth time on Colony Ship For Sale.