If there’s any band that has perfected the aural attack, it’s Sleigh Bells. Starting with their 2010 album Treats, they treated listeners with a sound that the mainstream had not experienced to that point - a mash-up of guitars turned up way past the point of distortion, hip-hop beats, and cheerleader-like vocals from Alexis Krauss. The niche they carved starting with their 2010 debut album Treats is still one that they can lay claim to, including with their most recent release, the 2017 mini-album Kid Kruschev. While it’s easier to discern Krauss’s vocals with their more recent releases, the band hasn’t lost the rage that made their debut album so irresistible and unforgettable. They turned that energetic rage into a spectacle at their sold-out show at 9:30 Club.