The Voice coach Will.i.am has branded the final result of the show "so sad" and "unexplainable" - adding that he was "perplexed" by the public vote.
Partially sighted Andrea Begley, 27, from County Tyrone, was crowned the winner of the BBC show last night, beating hot favourite and fellow Northern Ireland contestant Leah McFall, who was on Will.i.am's team.
Not long after Andrea was announced as the winner of a major record deal, the Twitter-loving coach tweeted:
He quickly followed it with a second tweet:
Moments before the final announcement, coach Jessie J - whose act Matt Henry was the first to be knocked out of the final - said: "In my opinion Leah is the winner."
But it was civil servant Andrea, who has 10% vision, who was named as the 2013 winner and victor of the second series, also beating country crooner Mike Ward."I actually can't speak," she said, looking shocked.
Did that just happen??!!! Thank you thank you thank you thank you thank you thank you thank you!!!!!!!!!!
The singer, who hails from the village of Pomeroy and was described as an inspiration by her coach Danny O'Donoghue from The Script, promised fans she would do her utmost to build on her win.
Last year's winner, Leanne Mitchell, has flopped.
Her debut single did not reach the top 40, while her album recently missed out on the top 100.