Maybe you know it, maybe you don't, but Lady Gaga's Telephone was initially submitted to Britney Spears for her Circus album. Her camp eventually denied the song but a demo was recorded anyway.
Well, let's just say things went for the best. Keeping in mind it's only a demo and not a finished track, it's nevertheless lacking the edge and fierceness Gaga and Beyoncé brought to the song. Plus it's an Autotune festival, making it sometimes impossible to recognize Brit's voice.
All is good in this world my friends, all is good.
Judge for yourself!
And that's Gaga's version, for those of you living in a cave!