Quintet sometimes contrabass. Quintet A quintet is a group containing five members. It is commonly associated with musical groups, such as a string quintet, or a group of five singers, but can be applied to any situation where five similar or related objects are considered a single unit. In classical instrumental music, any additional instrument (such as a piano, clarinet, oboe, etc.) joined to the usual string quartet (two violins, a viola, and a cello), gives the resulting ensemble its name, such as "piano quintet", "clarinet quintet", etc. A piece of music written for such a group is similarly named. The
String quintet a double bass, and Mozart's famous "Eine kleine Nachtmusik" may be performed with this instrumentation (the double bass being optional). Alternative additions include clarinet or piano (see clarinet quintet, piano quintet); and other closely related chamber music genres include the string quartet (much more common), the string trio, and the string sextet. A more unusual form of string quintet is the "violin quintet" composed of 3 violins, a viola and a cello (thus a string quartet with an additional violin). The term "string quintet" may refer to a group of five players that performs such works. The ensemble was standard