Vocal powerhouse John Holiday once again destroyed his competition on Tuesday's final Knockout Rounds episode of The Voice.The 35-year-old music teacher from Rosenberg, Texas, was so good on Eric Carmen's All By Myself, the coaches couldn't believe their ears.As John hit all the high notes, his coach John Legend, 41, pumped his fists and yelled, 'Sing it, John!' The frontrunner:Vocal powerhouse John Holiday once again destroyed his competition on Tuesday's final Knockout Rounds episode of The Voice'Is that a person?
A real person?' asked Gwen Stefani, 51. 'I quit. I actually retire right now.'She sat back in her chair and eyed the singer, marveling at his talent. 'It makes me feel so blessed to be on the show and watch somebody like you,'.
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