Revealed: What Britney Spears really sounds like without Auto-Tune.

A singer's vocal ability will naturally fade over time. So you can give some leeway to Britney Spears if she doesn't sound as good as she did back in the 90s.

But this leaked video of Britney singing her new track Alien without Auto-Tune isn't pretty. The song's producer William Orbit said that the track was from a warm-up session. But warm-up or not, this nasty Britney recording makes us want to scream and shout.

UPDATE: YouTube has pulled this video.