Retromorphosis, the new project featuring Spawn Of Possession members Dennis Röndum (vocals), Jonas Bryssling (guitars), Christian Muenzner (guitars), and Erlend Caspersen (bass) and ex-Decrepit Birth drummer KC Howard, will be releasing a new album, titled “Psalmus Mortis,” on February 21. The effort’s first single, “Vanished,” can be found below. Bryssling commented: “We had rules in…