A church I served did this catchy black Gospel song. The lyrics and layout are straight forward, and I love the chromaticisms and picardy thirds. (The extra use of "and His praises" is optional). "I Will Bless The Lord" (written by Melvin Crispell and performed by Hezekiah Walker) is best done with a choir, but three singers will work as well. Lyrics below:
I will bless the Lord at all times
I will bless the Lord at all times
I will bless the Lord at all times
And His praises
And His praises
And His praises shall continually be in my mouth