The Aztec Death Whistle. If hell has a sound, I bet it sounds a lot like the Aztec Death Whistle. The Aztec Death Whistle sounds like a shriek of death mixed with howling wind. It's so unnerving, that ...

"Skull whistles might have been used to scare the human sacrifice or the ceremonial audience, but further cross-documentation is needed here." Aztec Death Whistles, recreations of which are ...