The action of a string instrument that is plucked, strummed, or bowed by hand is the distance between the fingerboard and the string.In keyboard instruments, the action is the mechanism that translates the motion of the keys into the creation of sound (by plucking or striking the strings).The piano action mechanism (also known as the key action mechanism or simply the action) of a piano or other musical keyboard is the mechanical assembly which translates the depression of the keys into rapid motion of a hammer, which creates sound by striking the strings. Action can refer to that of a piano or other musical keyboards, including the electronic or digital stage piano and ...
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