I never knew “Light of Mine” as a children’s song, as in my Sunday school we jammed to “Jesus Loves Me” (like a dirge sung by children). I think maybe I came to know from this milestone doc how that song and others were threads through the Civil Rights movement:
And NPR on Sister Rosetta, holy cats, what a talent (and what a performer; that shimmy!):
https://www.npr.org/2017/08/24/544226085/forebears-sister-rosetta-tharpe-the-godmother-of-rock-n-roll