UK black metal band Shadowflag need no introduction. ‘In Asylum Requiem’, their fourth album, is perhaps their most formidable and forbidding; each song resolute in purpose and relentless in delivery. Yet for all the freezing fury, the rush of blackness is punctuated with diamonds of unique cut, moments of that unmistakeable Shadowflag magic. Songs like ‘From Agony To Cold’ perfectly define everything that Shadowflag are. They have a sound and signature that is all their own and this has never been more apparent than when wandering the complex passageways of In Asylum Requiem.