Holy Manna is the hymn tune originally written for "Brethren, We Have Met Together", which is one of the oldest published American folk hymns.
Holy Manna is a pentatonic melody in Ionian mode.
It was originally published by William Moore in Columbian Harmony, a four-note shape-note tunebook, in 1829, and is attributed to him.
In addition to being used in a significant number of early American hymnals, including Southern Harmony (#103) and Baptist Harmony (#1), Holy Manna appears in a large number of modern hymnals.
[1] It is also used as a common tune for other songs, especially "God, Who Stretched the Spangled Heavens", "All Who Hunger, Gather Gladly", and "I will Arise and Go to Jesus".