Beyonce was good as well as Pink, but I think the reason she chose to sing "Boy" was because it wasn't nominated. It was a good song and one way or another she is going to get a Grammy nomination for "Boy" that's why she performed it at the Grammy's. Next year during the Grammy's she will be nominated for best female performance again with this performance. She's smart if you ask me, and she put on one hell of a show. I even liked the "You outta know part" it was something different and new for her. So what if she did it on her tour, people have to pay to go her tour and watching the Grammy's is free. Also Pink did the same thing so no big deal they both did wonderful.