Britney Spears: "Telephone"

Before Lady Gaga conquered the Fame Monster, she was a songwriter who pitched 'Telephone' to Britney Spears. This Auto-Tuned Britney demo is more bare-bones, but it holds up against Gaga's version anyway. Even before its authenticity was confirmed, any seasoned Britneyologist could tell it was our girl singing, with her distinctive vocal tics and barely repressed rage.