Donnelly headed to the Bord Gáis Theatre in Dublin to sing the tune
But Killian Donnelly provided a special intimate performance of the piece's iconic number "The Music of the Night" to keep fans sated until then.
Recorded at the Bord Gáis Theatre in Dublin, the number features David Hayes on piano. You can watch it below:
The Phantom of the Opera first opened in the West End in 1986 and was an instant sensation with tunes such as "The Music of the Night" and "All I Ask of You". It has music by Andrew Lloyd Webber, lyrics by Charles Hart and Richard Stilgoe, with book by Andrew Lloyd Webber and Stilgoe. It is based on the 1910 French novel of the same name by Gaston Leroux.
According to the producers of the show, the piece going into Her Majesty's will be a "brand new physical production of Maria Bjornson's original design in a refurbished theatre".