Many of the superlatives describing Angel Olsen refer to how seemingly little it takes for her to leave an audience speechless, even spellbound. But Olsen has never been as timid as those descriptors imply, and the noisy, fiery hints in her earlier work find a fuller expression on her newest LP, Burn Your Fire for No Witness. Here, Olsen sings with full-throated exultation, admonition, and bold, expressive melody. Also, with the help of producer John Congleton, her music now crackles with a churning, rumbling low end and a brighter energy.