Taktube

He followed the silence deep into the underground pipes, where he found a small, rusted automaton. It wasn't part of the city’s official machinery; it was older, built with delicate silver filigree that didn't match the heavy brass of Taktube. The little machine was clutching a single, glowing crystal that pulsed out of sync with the city. "You're breaking the song," Elias whispered.

In plain words: