Meter

Meter is a term for the patterns of syllables used in much (English) poetry and song (including metrical Psalms). Six different metrical patterns are used in the Psalms of David in Metre:

Common Meter is used in many well-known hymns such as Amazing Grace and O For a Thousand Tongues. And it's used in one of the best known metrical Psalms -- The Lord's My Shepherd (Psalm 23):

That means that you can sing Psalm 23 to the tune for Amazing Grace (New Britain), to the tune for O for a Thousand Tongues, or to countless other Common Meter (CM) tunes.

The Psalms of David in Metre has a CM version of every Psalm except for one -- Psalm 136. It has two versions of Psalm 136:

It has a Short Meter (SM) version of four Psalms: Psalms 25A, 45B, 50A, 67A. A well-known SM tune is Diademata, the tune to Crown Him with Many Crowns. Diademata is often used to sing Psalm 50A.

It has a Long Meter (LM) version if three Psalms: Psalms 100A, 102B, and 145 B. One of the best-known LM tunes is The Old 100th, the tune to The Doxology and the traditional tune for Psalm 100A.

The Psalms of David in Metre has a 6.6.6.6 (6s) version of only one Psalm: Psalm 143B. St. Cecilia (Hayne) is the 6s tune to Thy way, not mine, O Lord.

And it has a 10.10.10.10.10 (10s) version of only one Psalm: Psalm 124B. The traditional tune for singing it (Now Israel May Say, and That Truly) is the Old 124th.