Christina is a great singer, but this performance is a perfect example of how she prioritizes her ego over interpretation.

For those of you who don't know, "Imagine" is a classic song, understated melodically and vocally to underscore the simple beauty of its message.

Eva Cassidy did a great, tender rendition of the song when she was alive. Gaga even did a nice rendition recently.

In contrast, Christina showboated all over the song...Linda Perry wasn't kidding when she said Xtina is most comfortable in her belt-yelling style! A belt or run here and there would have been nice, as in her Haiti benefit "Lift Me Up" performance; instead, she let her insecurity get the best of her, and the song became about "look how loud and agile I can be" rather than simply feeling the song and its message.

Christina's boisterous style was perfect for "It's a Man's World." Her performance was a tribute to James Brown, a man who was all about big singing and throne claiming! For a Lennon song, she should have shown more restraint.

It's too bad; this could have been truly great.