Alicia Keys loves this cover of 'If I Ain't Got You'

The Voice contestant Lauren Diaz wowed during the blind auditions as she covered Alicia Keys' hit 'If I Ain't Got You.'

It's a challenging song to attempt at the best of times and to sing it for Alicia Keys is just CRAZY! Alicia Keys was the first judge to turn around and when it came down to it she made sure Lauren knew she wanted to be her coach.

Watch Alicia Keys serenade Lauren with a tweaked version of the track.

Everything means nothing, if I ain't got you, Lauren.