A piano tuner is a skilled professional who adjusts the strings of a piano to ensure it produces the correct pitch. This process involves using specialized tools, such as a tuning fork and electronic tuners, to measure the frequency of each string. Regular tuning is essential for maintaining the instrument's sound quality and overall performance. In addition to tuning, a piano tuner may also perform minor repairs and maintenance. This can include fixing broken strings, adjusting the action, and regulating the keys. Proper care by a piano tuner helps extend the life of the piano and enhances the playing experience for musicians.