The Reality of "Talent"

I always thought that despite all the craziness and red neckiness that Britney Spears is in possession of, she was chosen for her looks and her small but adequate dose of talent.
After seeing the following video, I have realized that the aforementioned assumption may have been wrong.

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I know she's breathing hard in a lot of it, but for God's sake, she sounds like that horrible overzealous girl at karaoke who constantly wants to do "I Will Survive" but never comes in right on cue.