“Strange Fruit” is a needling song. It’s a voluptuous sounding tune that throws the lyrics -- a stark depiction of the lynching of two young black men -- into sharp and uncomfortable relief. Billie Holiday made the song popular, when she began singing it to close each of her shows at Cafe Society in 1939. Cafe Society was New York’s first integrated nightclub. Owner Barney Josephson set a few rules about the song: Holiday would end each show with the number. The waitstaff would halt service just before she sang, the lights would go off, and Holiday would narrate the scene — the broken bodies of Thomas Shipp and Abram Smith, hanged from a tree above a mob of panicked and angry white people in Marion, Indiana, in 1930 — in a tight spotlight.