I don't want to replay an old tune, but the discipline issue has to be stressed once more.
Tips
mistakes
读 chóng (again), not zhòng (heavy). 重弹 = to play again — the idiom is about repetition, not weight.
usage
Almost always disapproving — a speaker, argument, or policy that keeps recycling the same tired points. For neutral 'classic' replays, prefer 经典 or 再次.