In a piano factory tucked away in Richmond, Indiana, Gennett Records produced thousands of records featuring obscure musicians from hotel orchestras and backwoods fiddlers to the future icons of jazz, blues, country music, and rock 'n' roll. From 1916 to 1934, the company debuted such future stars as Louis Armstrong, King Oliver, Bix Beiderbecke, and Hoagy Carmichael, while also capturing classic performances by Jelly Roll Morton, Duke Ellington, Blind Lemon Jefferson, Charley Patton, Uncle Dave Macon, and Gene Autry. While Gennett Records was overshadowed by competitors such as Victor and...