K1 - Stage 5 - Mandolin Segment (The Caretaker) 

A segment that's 19 minutes and 10 seconds into the album.
I consider it to be a "calmer moment" compared to the majority of the track, but it's so monstrously distorted and alien that it's debatable.
I really enjoy this segment, personally.
The original sample used in this segment is: cylinders.libra...