Arrangement
In music, an arrangement is a musical adaptation of an existing composition.[1] Differences from the original composition may include reharmonization, melodic paraphrasing, orchestration, or formal development. Arranging differs from orchestration in that the latter process is limited to the assignment of notes to instruments for performance by an orchestra, concert band, or other musical ensemble. Arranging "involves adding compositional techniques, such as new thematic material for introductions, transitions, or modulations, and endings. Arranging is the art of giving an existing melody musical variety".[2] In jazz, a memorized (unwritten) arrangement of a new or pre-existing composition is known as a head arrangement.[3]
Not to be confused with Arraignment.Popular music[edit]
Popular music recordings often include parts for brass horn sections, bowed strings, and other instruments that were added by arrangers and not composed by the original songwriters. Some pop arrangers even add sections using full orchestra, though this is less common due to the expense involved. Popular music arrangements may also be considered to include new releases of existing songs with a new musical treatment. These changes can include alterations to tempo, meter, key, instrumentation, and other musical elements.
Well-known examples include Joe Cocker's version of the Beatles' "With a Little Help from My Friends", Cream's "Crossroads", and Ike and Tina Turner's version of Creedence Clearwater Revival's "Proud Mary". The American group Vanilla Fudge and the British group Yes based their early careers on radical re-arrangements of contemporary hits.[13][14] Bonnie Pointer performed disco- and Motown-styled versions of "Heaven Must Have Sent You".[15] Remixes, such as in dance music, can also be considered arrangements.[16]
For instrumental groups[edit]
Strings[edit]
The string section is a body of instruments composed of various bowed stringed instruments. By the 19th century orchestral music in Europe had standardized the string section into the following homogeneous instrumental groups: first violins, second violins (the same instrument as the first violins, but typically playing an accompaniment or harmony part to the first violins, and often at a lower pitch range), violas, cellos, and double basses. The string section in a multi-sectioned orchestra is sometimes referred to as the "string choir".[23]
The harp is also a stringed instrument, but is not a member of nor homogeneous with the violin family, and is not considered part of the string choir. Samuel Adler classifies the harp as a plucked string instrument in the same category as the guitar (acoustic or electric), mandolin, banjo, or zither.[24] Like the harp, these instruments do not belong to the violin family and are not homogeneous with the string choir. In modern arranging these instruments are considered part of the rhythm section. The electric bass and upright string bass—depending on the circumstance—can be treated by the arranger as either string section or rhythm section instruments.[25]
A group of instruments in which each member plays a unique part—rather than playing in unison with other like instruments—is referred to as a chamber ensemble.[26] A chamber ensemble made up entirely of strings of the violin family is referred to by its size. A string trio consists of three players, a string quartet four, a string quintet five, and so on.
In most circumstances the string section is treated by the arranger as one homogeneous unit and its members are required to play preconceived material rather than improvise.
A string section can be utilized on its own (this is referred to as a string orchestra)[27] or in conjunction with any of the other instrumental sections. More than one string orchestra can be utilized.
A standard string section (vln., vln 2., vla., vcl, cb.) with each section playing unison allows the arranger to create a five-part texture. Often an arranger will divide each violin section in half or thirds to achieve a denser texture. It is possible to carry this division to its logical extreme in which each member of the string section plays his or her own unique part.