"Music for 18 Musicians" is a minimalist composition by composer Steve Reich, created in 1976. The piece features a large ensemble of musicians, including strings, woodwinds, and percussion, who perform interlocking patterns and rhythmic cycles. It is known for its innovative use of phase shifting, where musical phrases gradually shift out of sync with one another. The work is structured in a series of sections, each characterized by a distinct set of repeating motifs. The ensemble's interplay creates a rich tapestry of sound, emphasizing the harmonic and rhythmic relationships between the instruments. This composition is a significant example of minimalism in contemporary classical music.