Improvised Weapon - thy name is Battered Banjo. This submission was a bit of a weird one, but I ran with it. A melee weapon to support that theme, and a bonus when applying musical accompaniment for a Hymn. add in a Sword of the Spirit and you can turn the banjo into an "axe"
And, YOU CAN SMASH IT ON A DUDE'S HEAD
We do not have a ton of options for hitting a dude with a bullet penalty as a noon action. Great is they are the lowball winner and your are trying to dodge a shotgun.
or this CAN lower the bullets of a dude with a Peacemaker.
Safety note on the influence bonus, reacting to Amazing Grace is great, since the influence boost will last until the end of the turn, but reacting to Onward Christian Soldiers will only endure to the end of the shootout.