The piano lid is an integral part of a piano and serves the purpose of covering the keys and strings of the instrument. There are many synonyms for this term, including piano cover, keyboard cover, piano top, piano shield, and lid cover, among others. These different synonyms are often used interchangeably and generally refer to the same part of the piano. The design and materials of the piano lid may vary depending on the type and style of the piano, but the basic functionality remains the same. Regardless of what it's called, the piano lid plays an essential role in protecting the delicate components of the instrument.