Assertion: piano's hammer | /r/HasProperty | lightweight
Facets:
Source sentences:
text: The hammer must be lightweight enough to move swiftly when a key is pressed; yet at the same time, it must be strong enough so that it can hit strings hard when the player strikes the keys forcefully for fortissimo playing or sforzando accents.
text: This 1870 Streicher has leather (not felt) hammers, a rather light metal frame (with just two tension bars), a range of just seven octaves (four notes short of the modern range), straight- (rather than cross-) stringing, and a rather light Viennese action, a more robust version of the kind created a century earlier by Stein.
text: The hammer must be lightweight enough to move swiftly when a key is pressed; yet at the same time, it must be strong enough so that it can hit strings hard when the player strikes the keys forcefully for fortissimo playing or sforzando accents.