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GRAMMY Power Rankings 2013: The Fiercest CompetitorsWho will walk away with GRAMMY gold at the 56th Annual awards? We rank the top 20 nominees.

Katy Perry, Lorde, Metallica, Robin Thicke to Perform at 2014 GRAMMYsAnother January day, another round of GRAMMY performer announcements. Metallica, Lorde, Katy Perry and Robin Thicke with Chicago will take the stage later this month.

Behind the Song: Katy Perry's 'Roar'"I am woman, hear me roar." It's the simple phrase that Helen Reddy sang in 1971 and 42 years later would inspire Katy Perry, along with her co-writer Bonnie McKee, to write "Roar."

Who is Hotter? Katy Perry VS Erin Andrews
Pick Your Sweetie in the Sweetest Sixteen (#4 & #16)

(AUDIO) Rollergirl's Stories We Missed 3-14-13

On Social Media, Jay-Z's Jab Trumps Katy Perry's Cleavage

Katy Perry & John Mayer Wear Matching White To Clive Davis' Pre-GRAMMY Party

Conor Maynard Takes On GRAMMY's® Female Nominees

Celebrate The 2013 GRAMMY Nominees With Upcoming Album

Black Friday Playlist: Get Ready To Shop!Shop til you drop with a little help from Kelly Clarkson, Jennifer Lopez and Katy Perry.

Let Katy Perry Make The Soundtrack To Your PartyHer 12-track Spotify lists includes well known acts like Marina and The Diamonds, Passion Pit and Azealia Banks alongside newer bands like JJAMZ, Purity Ring and M83.

Pitbull Rallies For Obama In FloridaPitbull is the latest artist in the music community to show his support for President Obama.

Katy Perry Sports Another Dress In Support Of ObamaMake no mistake about who Katy Perry is voting for. Her fashion speaks of her political choices.