This Brisbane, Australia, duo opens for Tegan and Sara in Halifax on Wednesday. Kate Cooper (guitar/vocals) and Damon Cox (drums/harmonies) tend often to a pattern of slash-bash-bring-it- down and repeat. And Cooper can over-enunciate her words. But An Horse can and does loosen up and let themselves go in different direction on Rearrange Beds. On the seventh song, "Little Lungs," they build the tension more slowly, hanging on to it for longer, before releasing. On the next, "Scared as Fuck," they up the tempo and vary the beat, which pushes Cooper's vocal performance, to capture and keep attention with a breakneck surf-styled venture.