Conversation so far:
What were the names of some of the songs Son House sang?
My Black Mama" and "Preachin' the Blues".
Were they his original songs or covers?
Two songs he learned from McCoy would later be among his best known: .
How did he become a blues singer?
He immediately changed his attitude about the blues.
How did his attitude change?
Another source of inspiration was Rube Lacey.

Question: Who was Rube Lacey?
Self-contained rewrite: Who was Rube Lacey?