Debut albums used to be statements of purpose: "This is who I am, and here's why you should pay attention." Now they spring forth full-blown, competent, confident -- and consummately generic. At 21, Jamie Blake has all the right moves: Unlike so many young singer-songwriters (e.g., Ben Kweller of Radish), she can genuinely write and sing. She rocks out when appropriate and quiets down for the quiet parts. Her lyrics and delivery are girl-power-strong yet sensitive. There isn't a false note in this collection of radio-friendly alt-rock. Blake would make a terrific opening act; you might even remember a few of her melodies enough to hum them while waiting for the headliner to appear. But there's no vision here, nothing to distinguish her from yesterday's Juliana Hatfield disciples -- or from tomorrow's. By album's end, you still have little sense of who she is or why she makes a difference. Or why, for that matter, she deserves to be a headliner.