Kim here, and I also attended the Norah Jones concert. While I thought the opening act was "interesting", I agree with Mike about the intermission. It was the longest one that I remember sitting through, and there was nothing being done onstage.
The thing that struck me with the concert was that both Norah and the opening act ( I can't remember her name) seemed to not connect with the audience. They seemed to be more into their music being "artistic" and not as "entertaining". To each his own, but , personally, I would have enjoyed it more if they had connected with us and had a little more onstage energy.