Singin' Billy: A Folk Opera is a 1952 opera composed by Charles F. Bryan from a libretto by Donald Davidson. The narrative is loosely based on the life of the singing school teacher William Walker (1809–1875), who compiled the 1835 tunebook Southern Harmony. In the opera, Walker's virtue is contrasted with the corruption of Kinch Hardy, a local trouble maker in the fictional Oconee Town in Pickens County, South Carolina.