If I were Derrick Sanders, artistic director of Congo Square Theatre Company, I’d produce anything Chadwick Boseman wrote, however ungainly, implausible, wrongheaded, or misbegotten. Because it’s a sure thing that eventually he’d give me something great. Unfortunately, Deep Azure isn’t great. Written entirely in rhymed couplets that bounce between hip-hop and pseudo-Shakespearean diction, this supernatural murder mystery is both wrecked and–almost–redeemed by Boseman’s enormous creative energy. On the one hand, the couplets are gratuitous, and the buildup is overblown for the predictable payoff; on the other, Boseman displays a dramatic intelligence and audacity that make the show work even as it’s failing. Sanders’s production is so good that if I were Boseman, I’d hand Congo Square anything I wrote. Through 10/9: Thu-Sat 8 PM, Sun 2 PM. Sat 9/24, 3 and 8 PM. Duncan YMCA Chernin Center for the Arts, 1001 W. Roosevelt, 312-587-2292. $15-$25.