Piano maintenance is essential for keeping a piano in good working condition. Regular tuning is necessary to ensure that the instrument sounds its best, as changes in temperature and humidity can affect the strings' tension. Additionally, cleaning the piano's exterior and keys helps maintain its appearance and hygiene. Another important aspect of piano maintenance is regulating the action, which involves adjusting the mechanical parts to ensure smooth playability. This includes checking the hammers, keys, and pedals for proper alignment and responsiveness. Regular maintenance can extend the life of a piano and enhance the playing experience.