Equipment: A simple, battery-driven Theremin (pitch controllable only) connected to the great cheap nasty Korg Monotron Delay (a combination which works out fine recorded via line); recorded via air with a Zoom H1n (new).
Recording was done on the old southern graveyard of Munich (‘Alter Südfriedhof’) while walking backwards (bonus points!), my beloved woman recording while following me. Tourist and natives seemed disturbed and may have considered us as some kind of ghost busters hunting electronic voice phenomenons. You can hear airplanes, church bells and our steps in the gravel, and, of course, the Theremin resonating in the Monotron Delay.
Because of the movement it was nearly impossible for me to calibrate the zero point of the theremin. Please consider the tonal structure simply as just too complicated for the ears of non-transdimensional beings like humans … 
We did many recordings, most of them unusable because of wind noise or other extraneous noises. Because of these problems I repeated the only (in my ears) usable part for five times to have some kind of repetitive musical structure.
So this is not 100% authentic, as there is a filter on very low noises and the duration is a fake, its 5x of the same 30 seconds. Maybe I manage to record another, better version …
