The Aztec skull whistle produces a shrill, screaming sound. A study shows that these whistles have a disturbing effect on the human brain. The Aztecs may have deliberately used this effect in ...

Aussie drum 'n' bass merchants Pendulum are about as uncompromising as it gets. Their fierce mix of walloping basslines, scuzzy synths and screeching sound effects make The Prodigy sound like a bunch ...