What do you think the phrase “Unproductive Funk” means to Robert Pollard? Does it mean that he sometimes goes an entire morning without writing any scratchy power-pop jams with inscrutable lyrics? A whole day? What? In the entire history of American indie rock, Robert Pollard might be the least unproductive figure out there. (He’s also not terribly funky, but that claim is probably a little more disputable.) And yet Pollard’s band Guided By Voices have just released a song called “Unproductive Funk” as the single from their just-announced new album.