Taylor Swift Serenades Mario Lopez

"Extra" host Mario Lopez was on the Grammy Awards red carpet Sunday night -- where performers stopped to chat.

Taylor Swift dished her favorite song of the year: Jay Sean's "Down" featuring Lil Wayne -- and then sang the tune.

The Black Eyed Peas started the year off with three Grammys. The Peas say they want to keep the momentum going through the New Year, dishing, "We just want to go out there and give the world the Black Eyed Peas experience."

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