Four-part harmony in the context of Contralto

A chorale is the name of several related musical forms originating in the music genre of the Lutheran chorale:

• Hymn tune of a Lutheran hymn (e.g. the melody of "Wachet auf, ruft uns die Stimme"), or a tune in a similar format (e.g. one of the themes in the Finale of Saint-Saëns's Third Symphony)
• Such tune with a harmonic accompaniment (e.g. chorale monody, chorales included in Schemellis Gesangbuch)
• Such a tune presented in a homophonic or homorhythmic harmonisation, usually four-part harmony (e.g. Bach's four-part chorales, or the chorale included in the second movement of Mahler's Fifth Symphony)
• A more complex setting of a hymn-like tune (e.g. chorale fantasia form in Bach's Schübler Chorales, or a combination of compositional techniques in César Franck's Three Chorales [fr])

The chorale originated when Martin Luther translated sacred songs into the vernacular language (German), contrary to the established practice of church music near the end of the first quarter of the 16th century. The first hymnals according to Luther's new method were published in 1524. Luther and his followers not only wrote metrical hymn lyrics, but also composed metrical musical settings for these texts. This music was partially based on established melodies of church hymns and known secular songs. In the 17th century the repertoire was enriched with more choral and organ settings of the chorale tunes. By the end of the century a four-part setting for SATB voices had become the standard for the choral settings, while the congregational singing of chorales was tending towards monody with an instrumental accompaniment. The prolific creation of new Lutheran chorale tunes ended around that time.

A church cantata or sacred cantata is a cantata intended to be performed during Christian liturgy. The genre was particularly popular in 18th-century Lutheran Germany, with many composers writing an extensive output: Stölzel, Telemann, Graupner and Krieger each wrote nearly or more than a thousand. The best known examples, however, are those of Johann Sebastian Bach, whose output stands out not by quantity but by the high level of expertise and craftmanship which they showcase.

The bulk of extant cantatas were composed for occasions occurring in the liturgical calendar of the German Reformation era, including Passion cantatas for Good Friday, and most made reference to the content of the readings and to Lutheran hymns appropriate for the occasion. The melodies of such hymns often appeared in cantatas, for example as in the four-part settings concluding Bach's works, or as a cantus firmus in larger choral movements. Other occasions for church cantatas include weddings and funeral services. The genre was later taken up by composers such as Felix Mendelssohn.

In music theory, contrapuntal motion is the general movement of two or more melodic lines with respect to each other. In traditional four-part harmony, it is important that lines maintain their independence, an effect which can be achieved by the judicious use of the four types of contrapuntal motion: parallel motion, similar motion, contrary motion, and oblique motion.

A Lutheran chorale is a musical setting of a Lutheran hymn, intended to be sung by a congregation in a German Protestant church service. The typical four-part setting of a chorale, in which the sopranos (and the congregation) sing the melody along with three lower voices, is known as a chorale harmonization. The practice of singing in unison was the rule of the reformed churches, both in Germany and in other countries.

A hymn tune is the melody of a musical composition to which a hymn text is sung. Musically speaking, a hymn is generally understood to have four-part (or more) harmony, a fast harmonic rhythm (chords change frequently), with or without refrain or chorus.

From the late sixteenth century in England and Scotland, when most people were not musically literate and learned melodies by rote, it was a common practice to sing a new text to a hymn tune the singers already knew which had a suitable meter and character.

Johann Sebastian Bach's chorale harmonisations, alternatively named four-part chorales, are Lutheran hymn settings that characteristically conform to the following:

• four-part harmony
• SATB vocal forces
• pre-existing hymn tune allotted to the soprano part
• text treatment:
  • homophonic
  • no repetitions (i.e., each syllable of the hymn text is sung one time)

Around 400 of such chorale settings by Bach, mostly composed in the first four decades of the 18th century, are extant: