Cross-stringing
Encyclopedia
Cross-stringing is a method of arranging piano strings inside the case of a piano
Piano
The piano is a musical instrument played by means of a keyboard. It is one of the most popular instruments in the world. Widely used in classical and jazz music for solo performances, ensemble use, chamber music and accompaniment, the piano is also very popular as an aid to composing and rehearsal...

 so that the strings are placed in a vertically overlapping slanted arrangement, with two heights of bridge
Bridge (instrument)
A bridge is a device for supporting the strings on a stringed instrument and transmitting the vibration of those strings to some other structural component of the instrument in order to transfer the sound to the surrounding air.- Explanation :...

s on the soundboard instead of just one. This permits larger, but not necessarily longer, strings to fit within the case of the piano. The invention of cross-stringing in the 1820s is variously credited to Alphaeus Babcock and Jean-Henri Pape
Jean-Henri Pape
Jean-Henri Pape was a distinguished French piano maker in the early 19th century.Pape was born in Sarstedt in 1787. He arrived in Paris in 1811 and secured employment with Pleyel, whose piano workshops he directed for several years. In 1815, he established his own manufacture of pianos, and almost...

. The first patented use in grand pianos in the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 was by Henry Steinway Jr.
Henry E. Steinway
Henry E. Steinway made pianos in Germany and the United States. He was the founder of the piano company Steinway & Sons....

 in 1859. In the late 19th century, cross-stringing gradually took the place of straight-stringing, in which all the strings are perpendicular to the keyboard and do not overlap.

The advantages of cross-stringing is that the case of the piano can be smaller, the bass strings can be longer and the placement of the bass strings is in the center of the piano case, where they receive more resonance than when placed at the side.

Cross-stringing is criticized by some as producing a "murky" sound. According to the pianist Gwendolyn Mok, "If you look inside your own piano, you will notice that the strings are all crossing each other. With the straight strung piano you get distinct registral differences--almost like listening to a choir where you have the bass, tenor, alto, and soprano voices. It is very clear and there is no blending or homogenizing of the sound."
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