Review: Mutation Audio aren't strangers to releasing heavy music, and the mutated sounds of Sub Tactics are the latest to be on the label, this time with a fiery double single. 'Shadow Force' is our favourite of the two, a stepping halftime number that is slow but doesn't feel it, as cascades of techy bass notes fall around its excellently made percussion. Proper creeper this one. The flipside and title track is similar but even deeper, with a wicked sub bass that growls beneath more techy, almost acid stabs. Watch out for the switch up, too.