Hippocrite
I don't know most of it sounds like her, except the bridge. The bridge really doesn't resemble her voice much.

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You have to remember, there are times when Gaga doesn't even sound like gaga. She has different ranges for songs, like there's one accustomed for hip-hop, and sometimes she just changes her voice for different producers.
Listen to her version of Fever. It sounds very country with the music and her voice does sound slightly different.
It could be her featuring another artist...