Sextet (Reich)

Sextet is a composition by Steve Reich. As the title indicates, it is written for an ensemble of four percussionists and two keyboardists. The percussionists play (at various times) three marimbas, two vibraphones, two bass drums, crotales, sticks, and tam-tam. Two percussionists double on piano during the opening "Pulse" section. The keyboardists play both pianos and synthesizers set to an electric organ sound. The piece was composed in 1984–1985 and is about 28 minutes in duration.

The piece is broken into five movements and, like many other Reich compositions, Sextet has an arch form: A-B-C-B-A. The paired movements share a tempo and a particular cycle of chords. These cycles use dominant chords with added tones to give it a darker, more chromatic sound, much like Reich's previous piece, The Desert Music.

Sextet plays with two aspects of music. First, it tries to overcome natural acoustic limitations of percussion instruments. Vibraphones are normally incapable of sustaining pitches at the same volume like wind or string instruments; they act much like a piano, where notes are struck and then allowed to ring, eventually decaying. To counter this limitation, Reich employs the extended technique of bowing of the bars with a bass bow. A similar limitation in the percussion section is countered by the use of the synthesizers. At the time Sextet was written, keyboard percussion instruments capable of reaching into the bass range (5-octave marimbas or bass marimbas) were not widely available. To give the work more depth in the lower pitch ranges, the bass drum is employed with doubling from the pianos or synthesizers.

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