"XERXES THE DARK" is a Dark Ambient project founded in 2005 by Morego Dimmer, an Iranian Dark Ambient pioneer, that also masters the Drone and Experimental genres. With a music focused in the creation of bizarre atmospheres that easily reverberates an agonizing and dreadful sense of doom, this musician from Tehran is rapidly placing himself as the greatest revelation of the genre in the Middle East.​
Morego Dimmer describes the project as a "conceptual ambient project with the essence of experimental journeys into the dark and psychedelic space". Xerxes The Dark is the first Iranian dark ambient music project and the main musical theme of the project is based on "space, time and beyond...".
XTD is the main music project of Morego Dimmer beside Nyctalllz, Nahan, Morego, Blind Owl and Ostanes.