Pogo, the words for Idumea are by Charles Wesley. The music is by or possibly just arranged by Ananias Davisson, 1816. I don't have time to double check just now, but I think that would mean it published in Kentucky Harmony, one of the early 19th century shape note books. This & tunes like it usually get labeled American Folk Hymns because the tune book compilers were arranging tunes from oral tradition at least as much as they were writing new music. Tim Eriksen's "And am I born to die" on the CD is the same song sung solo.

Here's the music. Men & women are both singing the top 2 lines. There's also an alto part being sung on the CD that was added later.

The recording was done at Liberty Church in Henagar, Alabama by an invited group of @50 Sacred Harp singers. @30 of the singers were also in the Academy Awards show.

Look at some of the other Cold Mountain threads for more details & links about the Sacred Harp singing on the album. Sacred Harp singings are open to the public for any to participate so you can do it too.