Britney Spears picks up Lady Gaga's 'Telephone'?

britney-spears-gi-500.jpgHold the "Telephone." Could Britney Spears' version of the Lady Gaga hit have leaked onto the Internet?

Gaga reportedly wrote the song for the former princess of pop, who decided to pass on the song. Not Britney's first mistake.

Spears did, however, record a demo of the song before she decided not to go with it.

Her reps deny that the song below is her voice, but it certainly sounds like her, right? Even with all that auto tune.