In true Enslaved fashion, the Bergen voyagers' 16th album, Heimdal, is both a departure and a communion with roots forged over three decades ago in the turbulent birth throes of Norway's black metal scene. Founded in 1991 by the then precociously young Ivar Bjørnson and Grutle Kjellson, Enslaved were determined to set out on a different course from their Satanic,...