Large-scale performances by a philharmonic or symphony orchestra, as well as smaller-scale performances by chamber orchestras, are all examples of orchestra concerts. Opera and other types of vocal performances are frequently accompanied by an instrumental ensemble. A wind ensemble, rather than a traditional full orchestra, can perform other types of orchestra concerts. Each of these performances can feature a wide range of musical styles, from classical to contemporary.
Large orchestra concerts frequently feature at least one concerto or symphony by one or more well-known classical composers. These pieces are typically from the 18th and 19th centuries, though some 20th-century pieces may be used in certain musical performances. Many are written for a full ensemble with string, woodwind, brass, and percussion sections, though some are written for a smaller chamber orchestra. Orchestra concerts are occasionally organized around music from a specific historical period, such as the Baroque or Romantic periods. Other performances may focus on the work of a single composer.
Chamber orchestra concerts are usually performed by a smaller group of musicians, usually fewer than 50, as opposed to a symphony orchestra, which typically has more than 100 players. Classical music pieces in these performances are frequently composed specifically for chamber concerts. Orchestral suites, for example, are a collection of shorter pieces arranged according to a common theme by a composer. Some chamber groups are made up of only three or four musicians who perform music written specifically for them. String quartet pieces or instrument trio pieces written for a piano and woodwind combination are examples of this.
Wind ensembles are groups of musicians who perform without the use of string instruments, and they frequently perform adaptations of classical pieces for woodwind, brass, and percussion instruments only. Other music genres, such as jazz or non-vocal versions of pop music, may be performed by this type of instrumental group. A concert band or symphonic band is another name for a wind ensemble.
Many of these instrumental ensembles put on concerts that cover a wide range of musical styles, regardless of their size or type. Some concerts may include a mixture of classical works, upbeat popular songs, and even film scores. These diverse programs are usually designed to appeal to as wide an audience as possible.