Élisabeth Jacquet de La Guerre, French harpsichord player and composer (died 1729)

Élisabeth Claude Jacquet de La Guerre was a French musician, harpsichordist and composer.

A harpsichord is a musical instrument played by means of a keyboard. Depressing a key raises its back end within the instrument, which in turn raises a mechanism with a small plectrum made from quill or plastic that plucks one or more strings. The strings are under tension on a soundboard, which is mounted in a wooden case; the soundboard amplifies the vibrations from the strings so that the listeners can hear it. Like a pipe organ, a harpsichord may have more than one keyboard manual and even a pedal board. Harpsichords may also have stop levers which add or remove additional octaves. Some harpsichords may have a buff stop, which brings a strip of buff leather or other material in contact with the strings, muting their sound to simulate the sound of a plucked lute.

March 17 is the 76th day of the year in the Gregorian calendar; 289 days remain until the end of the year.