Last year, I found a number of features to note in "We All Believe in One True God" (LSB #954) sung to the tune "Wir glauben all' (Chant)." Here's the first phrase:
The first verse begins, "We all believe in one true God"; the second, "We all believe in Jesus Christ"; and the third, "We all confess the Holy Ghost." In each, "all" is sung with a melisma (A G A E F), musically giving a sense of entirety.
The fourth musical phrase:
In the second verse, the text here is "Source of ev'ry grace and blessing." "Blessing " is sung with a melisma (D C D), giving a sense of number for that "ev'ry." In the third verse, the text is "Comforts us beyond all telling." "Telling" is sung with the same melisma, giving a sense of the entirety of "all."
The ninth phrase:
In the second verse, the text here is "Was crucified for all our sin." "Sin" is sung with a melisma (spanning nearly an octave: C B A G F E D), giving a sense of the entirety of "all." In the third verse, the text is "All flesh shall rise, and we shall be." Here, "flesh" is sung with a melisma (F ED C), giving a sense of "all." There's also a temporal merism here in the first verse: "He careth for us day and night."