Founded as a death/black metal act known as Treblinka in 1987, Tiamat were later part of the bands that pioneered the Swedish death metal sound. Sumerian Cry was the first full-length album recorded at Sunlight studios (Entombed`s Left Hand Path was released before but recorded two months later than Sumerian Cry). They first changed to gothic/doom metal, and then to gothic rock. After a few years of absence they added some black metal elements on Amanethes, but they switched back to a softer gothic rock sound on their 2012 effort The Scarred People.
Since the mid-`90s Tiamat has been employing a live keyboard player for all of their concerts, hiring them from well-known metal acts such as Opeth, Dark Tranquillity, Cradle of Filth and Evergrey.
Tiamat is a primordial goddess in the Babylonian and Sumerian mythologies, representing beauty and creation.