If Shady Nasty were a mood, it would be violently swinging and worrisome to those around it. The Australian trio’s sound can turn on a dime between ethereally pretty and menacingly dark, with equal parts jangling alt.rock, solemn noise-rock, and even moments of scowling extreme metal. Through it all, there is a sense that even in the quieter moments, bad things are afoot, even if they’re operating under a snot-nosed ethos of mischief and misrule. AA, the video for the new track from their upcoming EP Bad Posture, is a mind-bending spew of this attitude. While some of the band’s other songs are languid and dreamy, this one goes straight for the terror centers of the brain, and the footage used to represent it feels like a perfect match.The video takes place in what ap...