The songs on Angel Olsen’s new album should not, we are told, be considered to be merely a collection of demos. Nine of the eleven tracks on Whole New Mess already appeared on last year’s All Mirrors record, albeit in a more fleshed out form, and then some. For that album Olsen teamed up with orchestral composer Jherek Bischoff, arranger Ben Babbit, and an expanded band to deliver a feast of synths, strings and horns, all topped off with some of Asheville, North Carolina-based artist’s most commanding vocal performances to date. While unavoidably similar, Whole New Mess, is a very…