According to the Internet source given below, Porter Grainger [born Granger] was an African-American pianist, author, songwriter, playwright, and music publisher.
He was born in Bowling Green, Kentucky and began his musical career in Chicago before moving to New York in 1920. As a pianist he accompanied many female artists such as Fannie May Goosby, Viola McCoy, Clara Smith, and Victoria Spivey. From 1924 to 1928, he worked with blues singer Bessie Smith
recording for Columbia Records. His 1928 production Mississippi Days
also featured Bessie Smith. Grainger wrote songs for included Gladys Bryant, Dolly Ross, Ada Brown, and his own wife, Ethel Finnie as well as being bandleader of his ensemble the Get Happy Band
Tain't Nobody's Business if I Do
co-authored with Everett Robbins and Dying Crapshooter's Blues
(1927) have become blues standards.
He died in New York.
||Biography by wikipedia.org.