a group of four musicians playing string instruments, usually two violins, a viola and a cello
A string quartet is a group of four musicians who play stringed instruments together. The instruments are two violins, a viola, and a cello. a recital by the Borodin String Quartet
Ensemble consisting of two violins, viola, and cello, or a work written for such an ensemble. Since 1775 such works have been perhaps the predominant genre of chamber music. It was principally developed (if not quite invented) by Joseph Haydn, who wrote some 70 quartets between 1757 and 1803. Wolfgang Amadeus Mozart, Ludwig van Beethoven, Franz Schubert, Béla Bartók, and Dmitry Shostakovich are the preeminent subsequent quartet composers. Works called string quartets have traditionally observed the four-movement design of the sonata and symphony. Like most chamber music genres, quartet music was traditionally intended primarily for the private enjoyment of amateur musicians rather than for public performance