I don't think many of her album tracks were released as a single. And most of her post-2005 singles are downloads and promotional/DJ CD-Rs (with all the extended mixes. In the good old days all those mixes could be found on factory pressed CDsingles). The files on juno are the ones where she performs as Featuring Artist (Freemasons, Armin Van Buuren) but not her own singles. But I have no idea what itunes has to offer. I only have a few downloads, and "Bittersweet" is one of them.