Playwright Sarah Ruhl’s work has explored everything from life to death, love to language, religion to sexuality. But her plays have one thing in common: the characters speak. Now, for the first time, her characters will sing. The suburban Chicago native returned to her 2002 work Melancholy Play, teamed up with composer Todd Almond, and has come back to the Piven Theater- where the play premiered-to bring audiences Melancholy Play: a chamber musical. We talk to Ruhl about the show, and we’re joined by the cast who perform a few numbers.