The mechanics of the piano. The hammer strikes the strings while playing the keys. They resonate and are damped by the firm felt.
Schlüsselwörter
musical,
instrument,
piano,
dump truck,
string,
hammer,
iron,
frame,
plate,
soundboard,
gold,
black,
silver,
wooden,
case,
strike,
playing,
moistened,
loud,
forte,
indoor,
sunlit,
nobody,
tone,
walled,
tension,
felt,
bridge,
wide,
shot,
steady,
classical music,
concert,
jazz,
lid
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