In classical music, one of the most common combinations of four instruments in chamber music is the string quartet. … See more

Quartets are popular in jazz and jazz fusion music. Jazz quartet ensembles are often composed of a horn, classically clarinet (or saxophone, trumpet, etc.), a chordal instrument (e.g., electric guitar, piano, Hammond … See more

The quartet lineup is also very common in pop and rock music. A standard quartet formation in pop and rock music is an ensemble typically consisting of a vocalist, an electric guitar, a bass guitar, and a drum kit. This co… See more

A Russian folk-instrument quartet commonly consists of a bayan, a prima balalaika, a prima or alto domra, and a contrabass balalaika (e.g., Quartet Moskovskaya Balalaika). Configurations without a b… See more

• Allen, Ray. Singing in the Spirit: African-American Sacred Quartets in New York City, in series, Publication[s] of the American Folklore Society: New Series. Philadelphia, Penn.: University of Pennsylvan… See more