VIDEO: Relive the utterly spellbinding moment Sinead O'Connor and Conor McGregor lifted MGM Grand's roof
'Right proudly high over Dublin Town they hung out the flag of war.'
So flow the words of 'The Foggy Dew', the battle theme and entrance music that swept Conor McGregor to the Octagon for the biggest fight of his MMA career.
The Notorious was welcomed into a sold-out MGM Grand by Irish singer Sinead O'Connor.
He rendition of the classic Irish song had the crowd on their feet and, McGregor said, helped inspire him to history.
'That was some moment,' he declared. 'My God.'
'She is an Irish hero, a passionate woman... her song brought chills through my spine.'
Here is some superb fan footage of our Sinead belting it out.