By Beth J. Harpaz, Associated Press

An opera about Negro Leagues baseball star Josh Gibson, whose power hitting rivaled Babe Ruthโ€™s, will have its world premiere in Pittsburgh in April.

โ€œThe Summer King,โ€ presented by Pittsburgh Opera , premieres April 29. Gibsonโ€™s story also figured in โ€œFences,โ€ the movie starring Denzel Washington that was originally a play by Pittsburgh native August Wilson.

Baseball and opera โ€œdonโ€™t usually inhabit the same universe,โ€ said Christopher Hahn, Pittsburgh Operaโ€™s general director. But opera is the perfect medium for telling Gibsonโ€™s story because opera allows people โ€œto sing about emotions and aspirations and fears.โ€

Gibson was one of the first three Negro Leagues players to be inducted into the National Baseball Hall of Fame, which lists his career batting average as .350. He was twice named Negro National League batting champ and led the league in home runs three times. He played for two Pittsburgh teams, the Homestead Grays and the Crawfords.

Gibson died at 35, probably from a brain aneurysm, a few months before Jackie Robinson integrated baseball in 1947.

Gibsonโ€™s story is โ€œthe story that came before Jackie Robinson,โ€ says Daniel Sonenberg, composer of โ€œThe Summer King.โ€ โ€Joshโ€™s career made the advent of Jackie Robinson possible. It was Josh who played at this high level that caught the attention of white owners. It was Josh who demonstrated it was competitive suicide not to integrate.โ€

But baseballโ€™s integration led to the Negro Leaguesโ€™ shutdown, ending careers for dozens of black athletes who were not among the few chosen for white teams. Both โ€œFencesโ€ and โ€œThe Summer Kingโ€ honor โ€œa whole generation of wonderful players whose livelihoods and social structures got up-ended,โ€ Hahn said.

Several threads in โ€œFencesโ€ echo Gibsonโ€™s story. Troy Maxson, the fictional character played by Washington, is a former Negro Leagues star. He tells Gibsonโ€™s story, expressing bitterness that he and other ex-players ended up โ€œwithout a pot to piss in or a window to throw it out.โ€ Maxsonโ€™s mistress โ€” like Gibsonโ€™s wife โ€” dies in childbirth.

Pittsburgh Opera partnered on โ€œThe Summer Kingโ€ with the Josh Gibson Foundation, run by Gibsonโ€™s great-grandson Sean. He says that while โ€œFencesโ€ brought some attention to his great-grandfather, the opera will tell a fuller story.

โ€œMost people know the story of Josh Gibson as a baseball player, a home run hitter compared to Babe Ruth with outstanding statistics, in the Hall of Fame,โ€ Sean Gibson said. โ€œBut behind the uniform was a great man who lived through tragedy outside of dealing with racism and playing baseball: His wife died giving birth to their twins.โ€

The opera also portrays Gibsonโ€™s career playing abroad in Cuba, Mexico and elsewhere. โ€œOver there they didnโ€™t have to deal with racism,โ€ said Sean Gibson. โ€œYouโ€™re going over to Latin countries, your skin color is the same color as theirs.โ€

Nearly all 14 principal roles in โ€œThe Summer Kingโ€ are played by African-Americans, a rarity in operas (โ€œPorgy and Bessโ€ notwithstanding). Renowned mezzo-soprano Denyce Graves plays Gibsonโ€™s lover. Bass-baritone Alfred Walker, who plays Gibson, told the New Pittsburgh Courier that playing โ€œsomeone that looks like meโ€ is โ€œan amazing opportunity.โ€

A ballfield named for Gibson is located at 2217 Bedford Ave. in Pittsburghโ€™s Hill District neighborhood, not far from the August Wilson House, the late playwrightโ€™s childhood home. The August Wilson House hosts a block party April 29, starting at noon, just a few hours before the opera premiere, to mark Wilsonโ€™s birthday.

The Michigan Opera Theatre in Detroit plans to stage โ€œThe Summer Kingโ€ in March 2018.

A concert performance of an earlier version of โ€œThe Summer Kingโ€ was staged in 2014 in Portland, Maine, but Pittsburghโ€™s production is the first staging of the completed opera. Sonenberg is a music professor at the University of Southern Maine.