It is not familiar exactly when Cristofori first built a piano. An inventory make-believe by his employers, the Medici family, indicates the something of a piano by the year 1700; another document of doubtful authenticity indicates a date of 1698. The three Cristofori pianos that survive today date from the 1720s.

The great piano hammers return by gravity, hence their return will always remain more consistent than the vertical hammers, thus giving pianists finer guidance of their playing. However, a well-regulated vertical Piano Lessons piano will probably show smoother than a excellent piano that out-of-date not been regulated for years, and the correct best upright pianos now approach the level of some grandiose pianos of the same breadth in tone quality and responsiveness.