Schammasch’s Triangle is high-concept stuff. The Swiss group divide their latest album into stages with three themed CDs (The Process of Dying, Metaflesh and The Supernal Clear Light of the Void). The three discs each run to 33 minutes and all signify a stage of a spiritual journey. The concept is enhanced by the wonderful box set package and its eye-catching, symbolic imagery (by the talented Ester Segarra). It all screams masterpiece! Well, apart from the music. The album has a befittingly grand production but the music of Triangle is a chore. The first disc is a sub-Behemoth slog and the third disc, while it has a pleasant cinematic ambience, goes nowhere fast: five tracks where the final two would have had the same effect. The second disc is more successful. Its Monotheist-style evil, glassy prog and mysterious chants offering up the album’s hookiest passages. But there’s just too much padding throughout. And treating each disc as a separate album doesn’t help either when two of them are such a slog. The scale of the project keeps me returning to it, hoping it will finally click, but after coming away from another listen feeling nothing I have to finally accept that Triangle is just overlong and unrewarding. It looks and sounds incredible but there are not enough engaging moments to justify an hour and 40 minutes of my time.