Eric.....
I think the one you're looking for is "Shall We Gather at the River." It's it the database, search [gather at the river]. You can also find it in The Cyber Hymnal, complete with MIDI, at:
http://tch.simplenet.com/htm/swgatriv.htm
I have recorded versions by Red Foley, Tennessee Ernie Ford and Roy Rogers/Dale Evans. Think I'll dig 'em out now and have a listen.
........Tiger