Whereas current indie-rock darlings Interpol have taken all the favorite parts from your favorite new wave bands and fashioned them into refreshing new pop songs, San Francisco's Xiu Xiu have salvaged all of the ignored dark fragments of your favorite new wave songs and turned them into some refreshingly disconcerting new anti-pop songs. If last year's excellent "Knife Play" album was the soundtrack to a nervous breakdown, "A Promise" is the soundtrack to the final desperate act of a hemorrhaging psyche.