Some have quibbled with the Black Eyed Peas’ halftime performance during yesterday’s Super Bowl, and Fergie feels you. “Some of my notes were pitchy to me,” she admitted to a radio show today. Still, “It was so exhilarating. The whole thing. It was so big. That’s a once-in-a-lifetime thing.” Fergie saved most of her defense for the beleaguered Christina Aguilera, whose flawed rendition of the national anthem has inspired a bloodthirsty media to call for the singer’s head: “You know what? It’s such a huge venue, your nerves take a hold of you. I completely understand. She’s one of the best singers of our time. Nobody can take that away from you. … But you get nervous at these things. We’re human.” [USAT]