Piano restoration is an effort to return an older piano to its original beauty, worth, and tone. It involves a lot of cosmetic work on the body of the piano and with the keys and pedals, but it also involves a great deal of work inside the piano, restoring the strings, hammers, and other mechanisms that actually produce the tone, ensuring that its original quality is restored. Although the cosmetic portion is important, the functional portion—the one that restores the original tone and the performance—is the main objective of piano restoration.