Analysis of information sources in references of the Wikipedia article "Gaelic psalm singing" in English language version.
GAELIC PSALM SINGING A specific kind of singing in the Gaelic Church in which the psalm tune is "lined out" by a precentor, Gaelic psalm singing is performed slowly in unison or octaves by the congregation with much decoration and with no attempt to produce a uniform choral result. The tunes are post-Reformation, but the style, which transforms the melody, shows local variants and is generally agreed to reflect much older vocal practices; known as 'free heterophony', it finds its nearest parallels among the Copts in the Middle East.
