Of all the notions one can fling at post-hardcore, the much maligned and misattributed genre, it does have one undeniable strength: tension. The key songs in the genre’s oeuvre are not built around a typical rock structure of verse-chorus-verse, but rather on a more fluid, almost progressive structure that emphasizes the disquiet over all else. It’s best envisioned like a constantly tightening torture rack, constantly ratcheting the tension, keeping the listener in this state of unease and the brink of real discomfort before discharging in the most cathartic manner possible. It’s one of punk’s hydra heads taken to its logical…