Writing in 1945, Willis Laurence James recalled giving a lecture demonstration attended by Eubie Blake:
I sang a florid Negro cry. Eubie Blake leaped halfway from his seat and yelled “Oh, professor, professor, you hit me, you hit me!”
He placed both hands over his heart and continued with great emotion: “You make me think of my dear mother. She always sang like that. I can hear her now. Thaťs the stuff I was raised on.” He sat down quietly, except for a deep sigh that had no audible competition from anyone.
Blake was a living testimony to the influences that had made him musically unique even without formal training (which he did not acquire until he was old and famous and did not really need it). He knew all along that it was the cry that had guided him.
Quoted from “Cries in speech and song” by Willis Laurence James (Black sacred music IX/1–2  pp. 16–34).
Above, an undated photograph of Blake from the Maryland Historical Society; below, James demonstrates two florid cries.
Eubie Blake enjoyed a rewarding career in the 1910s and 1920s with his lifelong friend and lyricist Noble Sissle, both as the duo Sissle and Blake, the most successful black act of their time, and as songwriters for landmark musicals—most notably Shuffle along (1921), which included their most enduring number, I’m just wild about Harry.
Blake continued to compose songs for revues through the 1930s and 1940s, although none of his ventures reached the level of success that he experienced in the 1920s. But the ragtime revival of the 1950s kindled new interest in his talents, and he began playing and composing ragtime pieces.
In 1969 Columbia issued a two-LP set, The 86 years of Eubie Blake, featuring both his ragtime and his show music (along with a reunion with Sissle), which helped to renew interest in his work. During the last decades of his life Blake had his own record label, and his songs returned to Broadway in the anthology revue Eubie!(1978), which ran for 439 performances. The show’s namesake attended several times and performed a few songs on opening night.
This according to “Eubie Blake” by David A. Jasen, an article in Tin Pan Alley: An encyclopedia of the golden age of American song (New York: Routledge, 2012, pp. 47–48); this resource is one of many included in RILM music encyclopedias, an ever-expanding full-text compilation of reference works.
Today is Blake’s 130th birthday! Below, performing in 1972.