Cristofori's Hammer Action

Written by Studio AM.

Bartolomeo Cristofori cared for keyboard instruments at the Medici court in Florence near the end of the seventeenth century. Harpsichords made sound by plucking strings, and players could not greatly change volume by pressing a key harder. Cristofori pursued a different action. He designed small hammers that struck the strings when keys moved.

The mechanism had to solve a delicate problem. A hammer needed to hit a string and then fall away at once, or it would stop the string from ringing. Cristofori built an escapement that let the hammer strike freely and then fall away, plus parts that controlled bouncing and damping. By about 1700, his new instrument could respond to a player's touch with softer or louder notes. It became known as the pianoforte, meaning soft and loud. Three of his later pianos survive, preserving a design that gave players more control over musical expression.

Questions

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  1. Question 1 of 4

    What is the main idea of the passage?

  2. Question 2 of 4

    Why did the hammer need to fall away immediately after striking a string?

  3. Question 3 of 4

    What does “delicate” mean in the description of the mechanism's problem?

  4. Question 4 of 4

    How many of Cristofori's later pianos does the passage say survive?

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