The following is recorded from Oldenburg, North Germany.
The sexton at Esenshammer, one day on entering the church alone, heard
the organ playing most charmingly. He looked up and saw to his great
surprise that there was no player; it played by itself. He lost no time
in running to the Pastor, to tell him what was going on in the church.
The Pastor quickly put on his gown and hastened with his sexton to
witness the phenomenon. Sure enough; the organ was playing wonderfully
all kinds of profane airs; they both heard it distinctly. But, look
where they would, they could not see any performer.
After having recovered a little from his astonishment, the Pastor in a
solemn tone of voice called out towards the organ:--
"If thou up there canst play everything, just play to me our old Chorale
_Wer nur den lieben Gott laesst walten_."
In a moment the organ was silent.