1986, Bursa, Turkey Mezarkabul (known domestically as Pentagram) is one of the most famous heavy metal bands in Turkey. Founded by Hakan Utangaç and Cenk Ünnü. In 1987, bassist Tarkan Gözübüyük joined. Their first album, the self titled "Pentagram" was released in 1990 and consisted of speed/thrash metal songs. Murat Net, who would later be replaced by Demir Demirkan, played lead guitar for their first record.