Lady GaGa and Elton John will reportedly perform together at the 52nd Annual Grammy Awards on Sunday.

The Advocate reports that the duo are rumored to be working on a duet for the annual music awards show to be held at the Los Angeles Staples Center on January 31.

The 62-year-old would not confirm or deny any rumors when asked about the Grammy's at the Sundance Film Festival this week. Details have not emerged about which song the twosome will perform.

"Elton and Lady Gaga on the same stage is sure to create fireworks, it could be one of the most memorable Grammy performances of all time," Contactmusic quotes a source as saying.

Pink, Beyoncé, Black Eyed Peas and Taylor Swift are among other acts confirmed to perform at the awards.

Beyonce leads the list of nominations with ten nods, while Taylor Swift has eight and Black Eyed Peas six.

The openly bisexual "Poker Face" singer also has five nominations including Album of the Year, Record of the Year, and Song of the Year,

Meanwhile, GaGa is also said to be one of the celebrities hunted down to take part in Simon Cowell's US version of X-Factor.

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