Ó Madagáin (Breandán), Matheson (William) (ref.): Song for emotional release in the Gaelic tradition.
In Music and the church (1993), pp. 254–275.
On the lament in Irish. Incl. transcript of interview with the Rev. William Matheson on the subject of sung speech in the Scottish Gàidhealtachd. Previously publ. in Irish in LCC 22 (1992), pp. 164-184.