are a classical musical trio made up of three Roman Catholic priests from Northern Ireland.
Fr. Eugene O'Hagan and his younger brother, Fr. Martin O’Hagan, are originally from the village of Claudy, County Londonderry, with the family now residing in Derry. Fr. David Delargy is from Ballymena, County Antrim.
All three have been singing together since they met in the 1970s as students at St MacNissi's College, County Antrim, and immediately realised their musical prowess as a singing trio. They were nicknamed "Holy Holy Holy" by their peers due to their shared determination to enter the priesthood. But it was a priest at their school who first noticed how talented they actually were.
After leaving St. MacNissi's, they followed their vocational training at The Seminary in Belfast. They also studied at Queen's University where Fr Eugene specialised in English and Scholastic Philosophy. Fr Martin and Fr David specialised in Ancient History and Scholastic Philosophy. During that time they all studied under the Belfast-based singing teacher, Mr Frank Capper MBE.
The Priests concluded their training at the revered Irish College in Rome where Fr Eugene studied for 7 years (specialising in Canon Law), Fr Martin for 5 years (specialising in Moral Theology) and Fr David for 4 years (specialising in Sacramental Theology and later on in Education).
While in Rome, Fr Eugene took advantage of the fact that he was able to have singing lessons from Maestro Sergio Ballani. Almost immediately their combined and rare talent was recognised: They were invited in person by the Pope's private secretary, Monsignor Magee (the Papal Master of Ceremonies) to sing for Pope John Paul II in the sacred liturgy on numerous occasions.
The Priests' careers overlapped once again as they all eventually returned to Ireland, where they began their work in various special ministries. Each now lives the life of a full-time Parish Priest, tending to the spiritual needs of his parishioners and official duties at all church services. These include christenings, marriages and funerals of members of their community.
The Priests are also founder members of the internationally acclaimed Belfast-based choir, Cappella Caeciliana (founded 1995), with whom they have recorded four albums: in 2001, Cantate Domino; in 2005, Sing for the Morning's Joy; in 2008, O Quam Gloriosum; and in 2014, Reflecting Light.