Here is a different style of hymn singing from the Baptist Church.

This first is from a documentary:

Now just listen (you may have to adjust the sound as they get quite loud, but this is powerful singing!) …

Here’s a bit of info from the YouTube page:
These are spirituals and hymns as has been done (since slavery days) in Piedmont area of North and South Carolina. It may be unfamilar because pre-gospel music has died out (replaced by gospel) in most (if not all) areas of the US.