The piano is a musical instrument played by means of a keyboard that produces right by striking steel strings with felt hammers. The hammers immediately rebound allowing the url strings to continue vibrating at their orotund frequency. These vibrations are transmitted through a bridge to a soundboard that amplifies them.

The draw strings on a concert dignified can vibrate more freely than the shorter, thicker strings on a baby grand, which means that a concert grand's strings will have truer overtones. This is partly because the strings will be tuned closer to balanced temperament in relation to the standard pitch with less "stretching" in the piano tuning (See: Piano tuning). in 1884, are often chosen for domestic advantage where arena and charge are considerations.