Formed in the mid 90’s, FORTRESS UNDER SIEGE deliver power prog metal, combining traditional heavy metal with technical and melodic power metal. Having released their debut self-titled mini-CD in 1996, FORTRESS UNDER SIEGE is among the first Greek bands that ever-played progressive power metal. Since then, they have released four full-length albums 'The Mortal Flesh of Love' (2011), 'Phoenix Rising' (2014), 'Atlantis' (2020) and 'Envy' (2023).