the reformed presbyterian church of ireland, however, produced a split leaf version of the scots metrical psalter, but with additional "alternative versions" of the words included as the second half of the book. these were culled from a number of sources, including the rpcna books mentioned above. whenever a new version was necessary, they merely expanded their old book, without removing any of the old translations. one of these editions was produced in 1979. they were available in staff or sol-fa. a revised psalter in more modern idiom was published in 2004 under the title the psalms for singing.