"In This Place" - Joshua's Troop
"Worship, Honor, Love" - Shekinah Glory Ministry
"The Password (Live)" - Canton Jones
"We're Blessed" - Fred Hammond
"Hallelujah, Salvation, and Glory" - Stephen Hurd (Idk who originally does this song).
I chose these songs because they use the same 6 (or less) chords through out the entire song (except the intro of "In This Place".), there aren't a lot of harmonies, and even if you do these songs in their simplest forms they sound good. The hardest song of all of these will probably turn out to be "Worship, Honor, and Love".