Xiu Xiu has always straddled the line between noise and pop. They've covered Nick Cave, Rihanna, and "Under Pressure" with Michael Gira (Swans). They've collaborated with Merzbow, Deerhoof, Devendra Banhart, Dirty Beaches, Grouper, and more. They've done an album of Nina Simone covers and reinterpreted the Twin Peaks soundtrack. They've even composed songs with a Nintendo DS. If you're unfamiliar with their work, they basically do everything, they always make it sound like Xiu Xiu, and I find that admirable.