Her first appearance in public was in Dublin's Theatre Royal at the age of seventeen.
Cahill's first commercial recording, Ireland's Patricia Cahill sings for you, was recorded in Dublin and was later reissued in the United States under the title Danny Boy.
In the late 1960s and early 1970s she appeared often on Irish television, many times with the stage star Maureen Potter.
[1] She appeared on the Val Doonican Show on 18 November 1970, and also appeared regularly on BBC Television's Songs of Praise, Hosted by Robert Dougal.
Cahill also appeared on RTÉ TV's series A Handful of Songs, broadcast across the-then ITV network, during the early 1970s.