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Steinway's 88 keys are made of Bavarian spruce.
Each of the keys transmits its movement to a small, felt-covered wooden hammer which strikes one, two or three strings when the note is played.
The hammers are evenly aligned and have the ability to reset quickly and repeat any note rapidly.
Dampers are felt-covered action parts which, when placed against the strings, dampen the vibration.
The damper pedal raises all of the dampers, which allows sound to continue even after the key is released.
The quarter-sawn maple action parts are mounted on a Steinway Metallic Action Frame, which consists of seamless brass tubes with rosette-shaped contours, force-fitted with maple dowels and brass hangers to ensure the stability of the regulation.
In 1936, Steinway designed Accelerated Action in response to demands for a quicker-responding action.
In 1961, Steinway introduced its Permafree action which used teflon parts in place of cloth bushings and were intended to withstand wear and humidity changes better than cloth.
The teflon bushings resulted in certain unforeseen problems, however, and were discontinued after 1981.

1.821 seconds.