Under the Iron Sea is not as instantly catchy, though Keane is due credit for taking a bold step by infusing a darker sound into a set of tracks with moody electronica. The album has a few really good songs, most notably "Atlantic," "Nothing in My Way," "The Frog Prince," and the majestic title (sound)track. So let's split the difference: This effort is not the trumpeting that A Rush of Blood to the Head was, nor the mixed blessing X&Y was. But it never exactly slumps either, despite a move away from formulaic, radio-ready alt-pop hits. Not transcendent but worthwhile; this will grow on you.