She's a classically trained musician, from what I've heard about her. I just haven't heard it in her music. Being a great musician and singer still isn't guaranteed to make good music.
It reminds me of listening to some of these virtuoso guitar players, who can play any scale thrown at them, but it becomes boring after 5 minutes, because the shock value of their skill has wore off.
I'm not saying it's not entertaining, it just doesn't hold my attention for very long.
"The other versions will disappear. Even the 35 million tapes of Star Wars out there won’t last more than 30 or 40 years. A hundred years from now, the only version of the movie that anyone will remember will be the DVD version [of the Special Edition], and you’ll be able to project it on a 20’ by 40’ screen with perfect quality. I think it’s the director’s prerogative, not the studio’s to go back and reinvent a movie." - George Lucas