Review of Minstrel Man

Saw the Minstrel Man tv movie as an 8th grader in the 70s. At that time the plot introduced subjects I didn't quite understand at such a young age. Discussion ensued with my parents (northern black African-Americans born in the 1920s). They filled me in first hand about the horrific things they recalled about the Minstrel era and about the events their parents endured as musicians...but also instilled pride about the strength of those who resisted. 1 of my grandparents (born in the late 1800s was still living when the film was released and 2 others born around 1907 were also living). Somehow I found myself humming the theme music recently and decided to research. Learned the musical score was created by Fred Karlin, who won Emmys for the movie's music. However, I can not find any musical recording anywhere. Insane!! Any suggestions??