Father Ray Kelly amazed bride and groom Chris and Leah with his stunning rendition of Hallelujah at their wedding in Meath in April.
He also became an internet sensation, with 11 million hits on the YouTube clip within just a few days.
Now he is swapping the altar for the stag, with his own gig in the Olympia Theatre in Dublin in February.
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He also has a new album coming out next Friday, called Where I Belong.
He says he will give any money he makes to charity and to his family.
This video began his rise to fame: