It was at St. MacNissi’s College, Co Antrim, a local school in Derry, where Father Eugene O’Hagan, Father Martin O’Hagan and Father David Delargy met for the first time and realised their musical prowess as a singing trio. Nicknamed Holy Holy Holy by their peers due to their shared determination to enter the priesthood, it was a priest at their school who first noticed how talented they actually were.