If Death Cab for Cutie singer Ben Gibbard is the undisputed king of the kind of pastel indie pop, wistful and waifish, that's become the must-have soundtrack music for movies and TV shows about attractive youngsters and their love lives, then Imogen Heap is the genre's queen. Her band Frou Frou's "Let Go" was one of the highlights of the hit "Garden State" soundtrack, and this song, from her solo album "Speak for Yourself," provided the music for the closing sequence of the second season of "The O.C." -- about as prime a placement as one could ask for. It's a striking song, nothing but a chorus of Heap's heavily vocoder-altered voice, making for an unusually naked communion of the human and the digital, and she pulls off a beautifully nuanced arrangement, both grand and tender. Watch the video here.