Katy Perry Premieres Bitter New Single 'Part Of Me'

Is it about Russell Brand?

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Katy Perry Premieres Bitter New Single 'Part Of Me'
Photo: Capitol Records

Katy Perry has debuted her new single 'Part Of Me' as the first cut from The Complete Confection, the extended edition of her 2010 album Teenage Dream.

The song was performed for the first time at last night's Grammy Awards, and now the star has uploaded the lyric video to her YouTube page.

"You chewed me up and spit me out like I was poison in your mouth," she sings. "You took my light, you drained me down, but that was then and this is now."

The song was reportedly cut from the original tracklisting for the album, but the singer's decision to release the track now has set tongues wagging that it is being aimed squarely at Russell Brand, whom Katy split from at the end of 2011.

Listen to 'Part Of Me' below. What do you think?

Katy at the Super Bowl

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Katy Perry shows off her team spirit as she celebrates the New York Giants victory against the New England Patriots at Sunday's Super Bowl.