CUMMING -- RISPA Theatrical Production’s first weekend of “Leader of the Pack” at the Cumming Playhouse mesmerized audiences with its toe-tapping, sing-along fun. And there are still plenty of opportunities to catch this entertaining show, which runs at 8 p.m. Thursdays, Fridays and Saturdays, and at 3 p.m. Sundays through Aug. 14. “Leader of the Pack,” which was nominated for the 1985 Tony for Best Musical, captures the fun of the da wop era.