Most hymnals include a metrical index of the book's tunes. A hymn may be sung to any
tune in the same metre, as long as the
poetic foot (such as
iambic,
trochaic) also conforms. All metres can be represented numerically, for example "
Abide With Me" which is 10.10.10.10. Some of the most frequently encountered however are instead referred to by names: •
C.M., or
CM—
Common metre, 8.6.8.6; a quatrain (four-line stanza) with alternating lines of iambic tetrameter and iambic trimeter, which rhymes in the second and fourth lines and sometimes in the first and third. •
L.M., or
LM—
Long metre, 8.8.8.8; a quatrain in iambic tetrameter, which rhymes in the second and fourth lines and often in the first and third. •
S.M., or
SM— Short metre, 6.6.8.6; iambic lines in the first, second, and fourth are in trimeter, and the third in tetrameter, which rhymes in the second and fourth lines and sometimes in the first and third. "Blest Be the Tie that Binds" is an example of a hymn in short metre. Two verses may be joined and sung to a tune of double the length: •
D.C.M. (also
C.M.D., or
CMD)—Doubled CM, 8.6.8.6.8.6.8.6. •
D.L.M. (also
L.M.D., or
LMD)—Doubled LM, 8.8.8.8.8.8.8.8. •
8.7.8.7.D—equivalent to two verses of 8.7.8.7., either
trochaic or
iambic. English
minister and hymn writer
Isaac Watts, who wrote hundreds of hymns and was instrumental in the widespread use of hymns in public worship in England, is credited with popularizing and formalizing these metres, which were based on English folk poems, particularly
ballads. A few hymns have an inconsistent metrical pattern across their verses; one well-known example is "
O Come, All Ye Faithful". Such a metre is described as '"irregular".
Local and historic variation While the terminology above enjoys widespread agreement across the English-speaking world, there is some regional variation. Even within a region there may be historical variation and development. For example, some metre names no longer widely used includes: •
P.M. or
PM—
Peculiar metre; formerly used for irregular, rare, or one-of-a-kind metres in a hymnal. •
L.P.M. or
LPM—
Long Particular Metre, may refer to a six-line stanza of iambic tetrameter 8.8.8.8.8.8, •
H.M., or
HM—
Hallelujah metre, may sometimes be used in reference to 66.66.88, •
50th— 10.10.10.10.10.10 •
104th— 10.10.11.11 •
112th— 6.6.6.6.8.8 •
124th— 10.10.10.10.10 •
148th— 6.6.6.6.4.4.4.4 The latter metres are named for the metres of
metrical psalms. ==See also==