She did it again...

An unedited vocal version of Britney Spears' song 'Alien' leaked... And there are some mixed reviews. Some parts sound great, others not so much!

The song was recorded for her latest album Britney Jean that produced hits like 'Work B*tch' and 'Perfume.'

This isn't the first time we've ever heard Brit Brit without auto-tune and other vocal tricks... But it's still crazy to hear the difference!

Keep in mind, vocalists need tons of time to warm up and Britney may have recorded this at the early stage of the process.

To the haterzzz: Britney is still amazing and has a beautiful voice!

Listen to the raw, unedited track here!

This is how 'Alien' should be heard: