Angus and Julia Stone

This is an Australian brother and sister duo.  Their music is pop rock for the most part, with a distinct folk influence in some songs.  This is the first song of theirs I heard; the tone is light and the instrumentation is pretty simple, but it works quite well.  Both of them have very interesting voices, particularly the girl.  In general the songs are pretty upbeat and lighthearted, but there are some intense ones, particularly this.  I recommend giving these songs a listen, and checking out the band.