This song does stay in the lower register for many singers. As you can tell from the recordings, it is meant to be a very relaxed song. I’m not a big fan of having overpowering communion songs. To me, an overpowering communion song can be distracting to the congregation, who is hopefully in the process of self-reflection. Let your lead singer give a relaxed performance on this song. Additionally, the lower lead line will hopefully help harmony singers to stay in the lower register as well. Big 4ths and 5th harmonies really give the song a strong and wide feel. We sing the exact same lines a couple times in this song… that is ok. Let the message come across with the repetition. Hopefully you will find the congregation singing along with you after the first verse. That is the goal.
Overcome My Sin
The chord progression for this song should be an easy walk right up the major scale. You may want to encourage your bass player to find interesting bass lines around this progression and ask your guitar players to use a capo on the 2nd fret. Although there is a lot of percussion on this track, a simple drum set beat or only hand percussion will work well. Likewise, playing the song with just a guitar (or piano) and vocalist should work fine too.