Michael Bublé blown away after he invites a fan to sing on stage at his concert

Michael Bublé was lost for words after he bought a fan onto the stage at his concert in Buffalo, and she performed a song. 

Bublé had announced to the crowd that he was going to pick someone to perform on stage with him. 

Moments later, a lady named Nicole was brought up on stage and told Bublé that she would be singing "Hallelujah" by Leonard Cohen.

Michael was without a doubt blown away by Nicole's performance!

Have a look at her singing above.