I was watching the NFL game but looking at her show during the ads and, yeah, she was singing some pretty sad stuff and I didn't look in later so I guess I missed the happier stuff. However, I was impressed by her singing and stage presence. She didn't need a posse of dancers twerking behind her (at least not during the bits I saw) and while she didn't move much she used simple elegant arm and hand gestures and soulful facial expressions to help put the song over, reminiscent of Judy Garland but with perhaps a bit more subtlety. During the brief part of the show that I saw it seems like every word was deeply felt and sung with commitment. She has such an enormous voice but actually seeing her perform the songs adds a whole new dimension.