A septet is a formation containing exactly seven members. It is commonly associated with musical groups, but can be applied to any situation where seven similar or related objects are considered a single unit.

In jazz music a septet is any group of seven players, usually containing a drum set (pedal bass, snaredrum sometimes brushed, top hat cymbal, brushed cymbal), string bass or electric bass, and groups of one or two of the following instruments, guitar, trumpet, saxophone, clarinet, or trombone. For other article subjects named Jazz see jazz (disambiguation). ... An extended 4-piece drum kit A drum kit (or drum set or trap set - the latter an old-fashioned term) is a collection of drums, cymbals and other percussion instruments arranged for convenient playing by a sole percussionist (drummer), usually for jazz, rock, or other types of contemporary music. ... Side and front views of a modern double bass with a French bow. ... Fender Precision Bass Bass Guitar is a commonly spoken phrase used to refer to the electric bass and horizontal acoustic basses, a stringed instrument similar in design to the electric guitar, but larger in size, commonly fretted and sometimes fretless and with a lower range. ... A guitar is a stringed musical instrument. ... The trumpet is the highest brass instrument in register, above the horn, trombone, euphonium, and tuba. ... Saxophones of different sizes play in different registers. ... A bass clarinet, which sounds an octave lower than the more common Bb soprano clarinet. ... A lip-reed aerophone with a predominantly cylindrical bore, the trombone is a musical instrument in the brass family. ...

In classical music, a septet is either a composition for performance by seven musicians, or a group of seven musicians who perform such a work. One of the most famous classical septets is the Septet in E-flat major, Op. 20, by Ludwig van Beethoven, composed around 1799-1800, for clarinet, bassoon, horn, violin, viola, cello, and double bass. The Septet in E-flat major, Op. 65, for trumpet, piano, string quartet, and double bass by Camille Saint-Saëns from 1881 is regarded by some critics as one of that composer's greatest works. The modern composer Bohuslav Martinu wrote three septets: a group of six dances called Les Rondes for oboe, clarinet, bassoon, trumpet, two violins, and piano (1930); a piece called Serenade No.3 for oboe, clarinet, four violins, and cello (1932); and a Fantasie for theremin, oboe, piano, and string quartet (1944). Darius Milhaud composed a String Septet in 1964 for string sextet and double bass. Classical music is a broad, somewhat imprecise term, referring to music produced in, or rooted in the traditions of, European art, ecclesiastical and concert music, encompassing a broad period from roughly 1000 to the present day. ... This article concerns the composer of music. ... 1799 was a common year starting on Tuesday (see link for calendar). ... -1... A bass clarinet, which sounds an octave lower than the more common Bb soprano clarinet. ... A Fox Instruments bassoon. ... The horn is a brass instrument that consists of tubing wrapped into a coiled form. ... The pitches of open strings on a violin The violin is a bowed stringed musical instrument that has four strings tuned a perfect fifth apart, the lowest being the G just below middle C. It is the smallest and highest-tuned member of the violin family of string instruments, which... The viola (in French, alto; in German Bratsche) is a stringed musical instrument which serves as the middle voice of the violin family, between the upper lines played by the higher violin (soprano register) and the lower lines played by the deeper cello (bass) and double bass. ... A cello The cello (often formally referred to as the violoncello) is a stringed instrument and a member of the violin family. ... Side and front views of a modern double bass with a French bow. ... The trumpet is the highest brass instrument in register, above the horn, trombone, euphonium, and tuba. ... A grand piano A piano is a keyboard instrument, widely used in western music for solo performance, chamber music, and accompaniment, and also as a convenient aid to composing and rehearsal. ... The resident string quartet of the Library of Congress in 1963 A string quartet is a musical ensemble of four string instruments—usually two violins, a viola and cello—or a piece written to be performed by such a group. ... Charles Camille Saint-Saëns (IPA: ) (9 October 1835–16 December 1921) was a French composer and performer. ... 1881 was a common year starting on Saturday (see link for calendar). ... Bohuslav Martinů  listen? (born in Polička, December 8, 1890 – August 28, 1959) was a Czech composer. ... Modern Oboe The oboe is a musical instrument of the woodwind double reed family. ... 1930 (MCMXXX) is a common year starting on Wednesday. ... 1932 (MCMXXXII) is a leap year starting on Friday. ... Léon Theremin playing an early theremin The theremin or thereminvox (originally pronounced but often anglicized as [1]) is one of the earliest fully electronic musical instruments. ... 1944 (MCMXLIV) was a leap year starting on Saturday (link will take you to calendar). ... Darius Milhaud (September 4, 1892 – June 22, 1974) was a French-Jewish composer and teacher. ... For the Nintendo 64 emulator, see 1964 (Emulator). ... In classical music, a string sextet is a composition written for six string instruments, or a group of six musicians who perform such a composition. ...