The 31-year-old member of the pop-rock band McFly choked up when Tomos, 11, chose to sing Kelly Clarkson's "Piece by Piece", which reminded him of his own father leaving their family, reported DigitalSpy.
Although no one turned as their teams were full, the young artiste was praised by other two judges Pixie Lott and will.I.Am for singing the number with so much heart.
Jones later said he wished he had turned for the child who shared a part of his life story with him.