Auto-tune fan … rapper T-Pain is famous for his use of the pitch correcting audio technology auto-tune. Source: News Limited HE’S the American rapper famous for using the vocal pitch correcting auto-tune, but hearing T-Pain sing without the effect is mind-blowing. The 30-year-old performer was a special guest at NPR’s Tiny Desk Concerts series and a video of his three-song set has received 1.1 million views in just two days. Warning: the video contains explicit language. T-Pain singing without auto-tune [...]