A quartet is a composition or ensemble for four musicians. The string quartet—two violins, viola, and cello—is the most celebrated form, with a continuous repertoire from Haydn to the present. Other common quartets include vocal quartets, saxophone quartets, and piano quartets.

Writing for four independent yet balanced voices challenges composers to create texture that is neither too sparse nor too dense. Each player usually has a distinct line, and the interplay among the four parts generates much of the music’s interest. Performers must listen intently and adjust constantly to maintain blend and intonation.

The intimacy of the quartet setting allows for refined expression and detailed communication among the players. Many consider the string quartet literature one of the highest achievements of chamber music. Amateur and professional groups alike find the combination rewarding.

• Music or group for four performers
• String quartet is the classic form
• Requires balance and close listening
• Rich repertoire across styles