What does SATB mean in music terms?

Magnus Choir VSTi - Graphical User Interface

Magnus Choir is a virtual instrument plug-in which can be used to create natural and synthetic choirs, using a combination of synthesis and sampling. Themale and female choruses combine to form a mixed chorus, featuring the classic SATB (Soprano, Alto, Tenor, Bass) structure: women sing Soprano andAlto, while men sing Tenor and Bass.

In music, SATB is an initialism for soprano, alto, tenor, bass, defining the voices required by a chorus or choir to perform a particular musical work.Pieces written for SATB, the commonest combination and that used by most hymn tunes, can be sung by choruses of mixed genders, by choirs of men andboys, or by four soloists.

There is a lack of general agreement on the initialisms and/or abbreviations for any but these, the four most frequently encountered voices.

Other initialisms/abbreviations often met with in this context include Tr for Treble, Mz (or similar) for Mezzo-soprano, Ba, Bar or Bari for Baritone and C forContralto, this latter tending to define the gender of the alto(s) expected to sing the part which, if called A, might otherwise be thought suitable forCountertenors (Ct). SCTB is therefore commonly found in Romantic Italian opera choruses where the Alto singers portray a group of female protagonists onstage.

SATB div. (divisi, or divided) denotes that one or more individual parts divide into two or more parts at some point in the piece, often sharing the samestave. A single choir with two of each voice type should be written SSAATTBB, unless it is laid out for two identical choirs, in which case it is SATB/SATB.Soloists are written in small type, e.g. satb/SATB. In both these instances a space may be substituted for /. Publishers usually include such descriptions intheir catalogues of choral works although many fail to provide sufficient detail, commonly omitting, for example, the term div. where it is required fully todescribe the resources required by the composer. Also misleading can be the use of B for a Baritone part or S for an Mz part as for example in Stanford's

motet "Eternal Father" which is scored for SMzATBarB, not SSATBB.

Initialisms of this kind may also be used to specify the vocal constituents of an ensemble of solo singers.

Instrumental music

SATB can also refer to ensembles of four instruments from the same family, such as saxophones (soprano, alto, tenor and baritone) or recorders. Also, theindividual contrapuntal parts of many instrumental compositions, particularly fugues, such as those found in Bach's "The Art of Fugue" and "The MusicalOffering", may also be called SATB.

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