The Sea & Cake’s new CD, “Car Alarm,” is certainly a jarring sound. This is a Chicago band lauded for years an years for its cool, light, breezy sounds — and here they come barreling out of the gate with a full-on rocking opener, “Aerial.” Eventually, they settle back into more familiar, Brazilian grooves, but it’s sure been refreshing to listen to this quartet — led by the wonderfully tuneless singer Sam Prekop and wicked guitarist Archer Prewitt — tighten up during the last couple of years. Catch the tunes new and old in a hometown show tomorrow night at the Empty Bottle.