Ellie was recently seen leaving Abbey Road (where Adele did "Skyfall"), and seeing as she refuses to release a new album and has only done soundtracks for the last year or so, it makes sense.
I'll hear "Often" whenever Beauty Behind the Madness drops. I'm lazy with checking out songs I don't know. It took me ages to listen to "The Hills," and really that was only because it's been slaying the iTunes top ten for so long that I couldn't ignore it.