Mosaic Theater Company’s eclectic lineup for the 2018-2019 season offers serious comic release alongside searing indictment. The company sustains its commitment to local writers. Its continues its long-running Voices from a Changing Middle East Festival. It also champions intercultural encounters and honoring iconic figures in African-American culture. In addition, Season Four is the first season to achieve gender parity: four of the plays are written by men and four by women. Season Four serves up two musical offerings: “Marie and Rosetta,” about gospel icon and rock pioneer, Rosetta Tharpe and protégée Marie Knight featuring local diva Roz White; and “Twisted Melodies: The Donny Hathaway Story,” a co-production with Baltimore Center Stage and The Apollo Theatre starring Kelvin Roston Jr. mosaictheater.org.