Pharrell Williams, Daft Punk Pharrell Williams, Daft Punk

The Grammy Awards grabbed its second-biggest audience in 21 years Sunday.

The three-and-half-hour show averaged 28.5 million viewers and a 9.9 in the adults 18-to-49 demographic, edging out last year's audience of 28.4 million and trailing 2012's ceremony (39 million), which featured a tribute to Whitney Houston. It dipped two tenths in the demo vs. last year.

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