This is a clip of the "Rebel Quintet" that played for Castro's guerilla's. they tell an interesting story about how their father, a farmer sympathetic to the guerillas, provided the land for Castro's base and encouraged his sons to work with the movement. Listen for their discussion of "ideology" it is quite interesting. Similar to stories from my grandmother of her mother helping Macedonian rebels at the turn of the century.
The picture is of course of Castro and Malcolm X on Castro's trip to New York, in 1960 I believe, when he stayed in Harlem. To paraphrase Mohammed Ali, Castro never called me n-----.