Black metal, post-hardcore, a touch of shoegaze and a whole lotta hurt, Hidden Mothers deliver quite the turbulent brew. Having been swirling around the British underground for what feels like an age, the Sheffield quartet show that patience is a virtue on their long-promised debut, and it’s an album on which they frequently stir up more poignant emotional notes and strike greater depths than many operating in similar fields. This comes down largely to not hiding its vulnerabilities under an avalanche of volume and aggression. Instead, the black metal elements, those moments where they roar forth with everything they’ve got, are used as punctuation to the larger motifs drawn more from melody and a masterful grip on how to wallow in quieter, slower moments. So it is...