There are two bands called Tenebris: 1) A Keller Synth / Dungeon Synth band from Indonesia. https://tenebriz.bandcamp.com 2) A Polish Death/Progressive Metal band A message from Tenebris "To all our friends around the world! We are the Polish band which music pulse has been transmited to all of you since 1991, expressing the aura of unscientific ideas such as Ufo, paleoastrology, prekognition and the paths which are strolled by the souls and ancient energies. Read more on Last.fm