Skull tune

Per Hos Sonos Sepulcrum Aperies was a type of trascription of a simple type of musical combination of notes. This combinations of notes was to be played on a instrument made of skulls, which would trigge ran opening machanism, unlocking or opening a door. There was one such trancsript in a manuscript by Abbess Hildegard of Bingen.

Appearances

 * Indiana Jones and the Last Crusade: The Graphic Adventure