The Ghosts of Colors (2006, 1MB, 29 sec)

Lewis LaCook is often brilliant & never less than interesting.

He says of this:
EVP is short for electronic voice phenomena; these are purportedly
“otherworldly” sounds audible only via magenetic tape.
They are often cited as evidence of the supernatural.
Some of the sounds heard in this video are culled from
paranormal research archives.