Strophic form in the context of "Singspiel"

A refrain (from Vulgar Latin: refringere, "to repeat", through Old French: refraindre) is the line or lines that are repeated in poetry or in music—the "chorus" of a song. Poetic fixed forms that feature refrains include the villanelle, the virelay, and the sestina.

In popular music, the refrain or chorus may contrast with the verse melodically, rhythmically, and harmonically; it may assume a higher level of dynamics and activity, often with added instrumentation. Chorus form, or strophic form, is a sectional and/or additive way of structuring a piece of music based on the repetition of one formal section or block played

Song structure is the arrangement of a song, and is a part of the songwriting process. It is typically sectional, which uses repeating forms in songs. Common piece-level musical forms for vocal music include bar form, 32-bar form, verse–chorus form, ternary form, strophic form, and the 12-bar blues. Popular music songs traditionally use the same music for each verse or stanza of lyrics (as opposed to songs that are "through-composed"—an approach used in classical music art songs). Pop and traditional forms can be used even with songs that have structural differences in melodies. The most common format in modern popular music is introduction (intro), verse, pre-chorus, chorus, verse, pre-chorus, chorus, bridge, and chorus, with an optional outro. In rock music styles, notably heavy metal music, there are usually one or more guitar solos in the song, often found after the middle chorus part. In pop music, there may be a guitar solo, or a solo performed with another instrument such as a synthesizer or a saxophone.

The foundation of popular music is the "verse" and "chorus" structure. Some writers use a simple "verse, hook, verse, hook, bridge, hook" method. Pop and rock songs nearly always have both a verse and a chorus. The primary difference between the two is that when the music of the verse returns, it is almost always given a new set of lyrics, whereas the chorus usually retains the same set of lyrics every time its music appears." Both are essential elements, with the verse usually played first (exceptions include "She Loves You" by The Beatles, an early example in the rock music genre). Each verse usually employs the same melody (possibly with some slight modifications), while the lyrics usually change for each verse. The chorus (or "refrain") usually consists of a melodic and lyrical phrase that repeats. Pop songs may have an introduction and coda ("tag"), but these elements are not essential to the identity of most songs. Pop songs often connect the verse and chorus via a pre-chorus, with a bridge section usually appearing after the second chorus.

A madrigal is a form of secular vocal music most typical of the Renaissance (15th–16th centuries) and early Baroque (1580–1650) periods, although revisited by some later European composers. The polyphonic madrigal is unaccompanied, and the number of voices varies from two to eight, but the form usually features three to six voices, whilst the metre of the madrigal varies between two or three tercets, followed by one or two couplets. Unlike verse-repeating strophic forms sung to the same music, most madrigals are through-composed, featuring different music for each stanza of lyrics, whereby the composer expresses the emotions contained in each line and in single words of the poem being sung.

Madrigals written by Italianized Franco–Flemish composers in the 1520s partly originated from the three-to-four voice frottola (1470–1530); partly from composers' renewed interest in poetry written in vernacular Italian; partly from the stylistic influence of the French chanson; and from the polyphony of the motet (13th–16th centuries). The technical contrast between the musical forms is in the frottola consisting of music set to stanzas of text, whilst the madrigal is through-composed, a work with different music for different stanzas. As a composition, the madrigal of the Renaissance is unlike the two-to-three voice Italian Trecento madrigal (1300–1370) of the 14th century, having in common only the name madrigal, which some have suggested derives from the Latin matricalis (maternal) denoting musical work in service to the mother church or from the post-classical Latin matricalis (maternal, simple, primitive). Other sources note that the word "madrigal" comes from the Hebrew word "madriga" meaning "step" (the "-al" suffix of the word also is Hebrew, in this case meaning "in the style of") and describes the step-like progression of the tune. The early Christians having been Jews are believed to have brought the musical style into the Christian/Byzantine liturgy and, from there, into Gregorian chant and from there it made its way into secular song.

In the theory of musical form, through-composed music is a continuous, non-sectional, and non-repetitive piece of music. The term is typically used to describe songs, but can also apply to instrumental music.

While most musical forms such as ternary form (ABA), rondo form (ABACABA), and sonata form (ABA') rely on repetition, through-composed music does not re-use material (ABCD). This constant introduction of new material is most noticeable in musical settings of poems, in contrast to the often used strophic form (AAA). Through-composed songs have different music for each stanza of the lyrics. The German word durchkomponiert is also used to indicate this concept.

A kharja or kharjah (Arabic: خرجة, romanized: kharjah, lit. 'exit' [ˈxardʒa]; Spanish: jarcha [ˈxaɾtʃa]; Portuguese: carja [ˈkaɾʒɐ]; also known as a markaz مَرْكَز 'center'), is the final couple of abyāt, or verses, of a muwaššaḥ (مُوَشَّح 'girdle'), a poem or song of the strophic lyric genre from al-Andalus. The kharja can be in a language that is different from the body; a muwaššaḥ in literary Arabic might have a kharja in vernacular Andalusi Arabic or in a mix of Arabic and Andalusi Romance, while a muwaššaḥ in Hebrew might contain a kharja in Arabic, Romance, Hebrew, or a mix.

The muwashshah typically consists of five strophes of four to six lines, alternating with five or six refrains (qufl); each refrain has the same rhyme and metre, whereas each stanza has only the same metre. The kharja appears often to have been composed independently of the muwashshah in which it is found.

Muwashshah (Arabic: مُوَشَّح muwaššaḥ 'girdled'; plural مُوَشَّحَات muwaššaḥāt; also تَوْشِيْح tawšīḥ 'girdling,' pl. تَوَاشِيْح tawāšīḥ) is a strophic poetic form that developed in al-Andalus in the late 10th and early 11th centuries. The muwaššaḥ, embodying the Iberian rhyme revolution, was the major Andalusi innovation in Arabic poetry, and it was sung and performed musically. The muwaššaḥ features a complex rhyme and metrical scheme usually containing five aghṣān (أَغْصَان 'branches'; sing. غُصْن ghuṣn), with uniform rhyme within each strophe, interspersed with asmāṭ (أَسْمَاط 'threads for stringing pearls'; sing. سِمْط simṭ) with common rhyme throughout the song, as well as a terminal kharja (خَرْجَة 'exit'), the song's final simṭ, which could be in a different language. Sephardic poets also composed muwaššaḥāt in Hebrew, sometimes as contrafacta imitating the rhyme and metrical scheme of a particular poem in Hebrew or in Arabic. This poetic imitation, called muʿāraḍa (مُعَارَضَة 'contrafaction'), is a tradition in Arabic poetry.

The kharja, or the markaz (مَـْركَز 'center') of the muwaššaḥ, its final verses, can be in a language that is different from the body; a muwaššaḥ in literary Arabic might have a kharja in vernacular Andalusi Arabic or in a mix of Arabic and Andalusi Romance, while a muwaššaḥ in Hebrew might contain a kharja in Arabic, Romance, Hebrew, or a mix.