Heavy Song of the Week is a feature on Heavy Consequence breaking down the top metal, punk, and hard rock tracks you need to hear every Friday. This week, we highlight the new single “Reward the Scars” from Korn. Korn have endured for a reason. Even for those incredulous of nu-metal both as it emerged and during the recent resurgence, there is an undeniable creativity to the group. It helps, of course, when you are credited as one of the primary founders of a style when it comes to knowing how to evolve it without becoming self-pastiche. The group has evolved to something sleek, bleak and coyly progressive ever since 2007’s untitled album, an arc they have only dialed more into during their artistic renaissance starting with The Nothing . The surprise new single “Reward the Scars” keeps that up, marrying murky avant-gardeisms with an emotionally direct chorus.…