Choir Boy ****, Slave Play ****
By: David Sheward Jan 11, 2019: You can count on the fingers of two hands the number of African-American playwrights who have had more than one financially successful play on Broadway in the past few decades (August Wilson and Lynn Nottage are among the few). Add gay and the number gets even smaller or even non-existant, indicating that black queer voices have a difficult time being heard on America's main commerc…