Note:  Do not rely on this information. It is very old.

AEolian Harp

AEolian Harp, an instrument made by stretching catgut strings over a thin piece of wood generally shaped like a box; this is placed in a window (opened sufficiently to admit it), and the wind passing over the strings produces a succession of beautiful sounds, very low and mournful when the wind is slight, but increasing in strength and height as the wind increases.

“God is our refuge and strength, an ever–present help in trouble.”
Psalm 46:1