Growing up, Roberta Flack was known as a musical prodigy who “could play anything” on the piano. She grew up in the church, where her mother was an organist, and started studying classical piano repertoire at just nine years old. “Roberta Flack” premieres tomorrow January 24 at 9/8c on PBS. [VID: Footage of Roberta Flack as a young person. Transcript: I was very popular because I could play anything. On the piano? On the piano. My mother was a church organist and I did grow up in the church. Bei