The sound is that of an electrical tool, like a drill or a saw, with sometimes shrill vibrations. The rhythm is that of a manual operation, with moments of pause or greater persistence. Trepanaciones (Sonidos de la morgue) (Trepanations - Sounds of the Morgue), 2003, a sound work by Teresa Margolles, consists of the faithful recording of sounds emitted by the medical instrument used during an autopsy, in particular for opening up the skull. As with other works by the artist, the title provides some information that, while crucial for initial comprehension, still leaves many significant details open to personal interpretation. [...]