Refrain in the context of "Antiphon"

Lyrics are words that make up a song, usually consisting of verses and choruses. The writer of lyrics is a lyricist. The words to an extended musical composition such as an opera are, however, usually known as a "libretto" and their writer, as a "librettist". Rap songs and grime contain rap lyrics (often with a variation of rhyming words) that are meant to be spoken rhythmically rather than sung. The meaning of lyrics can either be explicit or implicit. Some lyrics are abstract, almost unintelligible, and, in such cases, their explication emphasizes form, articulation, meter, and symmetry of expression.

Popular music is music with wide appeal that is typically distributed to large audiences through the music industry. These forms and styles can be enjoyed and performed by people with little or no musical training. As a kind of popular art, it stands in contrast to art music. Art music was historically disseminated through the performances of written music, although since the beginning of the recording industry, it is also disseminated through recordings. Traditional music forms such as early blues songs or hymns were passed along orally, or to smaller, local audiences.

The original application of the term is to music of the 1880s Tin Pan Alley period in the United States. Although popular music sometimes is known as "pop music", the two terms are not interchangeable. Popular music is a generic term for a wide variety of genres of music that appeal to the tastes of a large segment of the population, whereas pop music usually refers to a specific musical genre within popular music. Popular music songs and pieces typically have easily singable melodies. The song structure of popular music commonly involves repetition of sections, with the verse and chorus or refrain repeating throughout the song and the bridge providing a contrasting and transitional section within a piece. From the 1960s through the mid-2000s, albums collecting songs were the dominant form for recording and consuming English-language popular music, in a period known as the album era.

In music, especially Western popular music, a bridge is a contrasting section that prepares for the return of the original material section. It adds a sense of progress within a piece of music and can be used to introduce a source of tension. In a piece in which the original material or melody is referred to as the "A" section, the bridge may be the third eight-bar phrase in a 32-bar form (the B in AABA), or may be used more loosely in verse-chorus form, or, in a compound AABA form, used as a contrast to a full AABA section.

The bridge is often used to contrast with and prepare for the return of the verse and the chorus. "The b section of the popular song chorus is often called the bridge or release ", or boredom-breaker,.

In music, a drone is a harmonic or monophonic effect or accompaniment where a note or chord is continuously sounded throughout most or all of a piece. A drone may also be any part of a musical instrument used to produce this effect; an archaic term for this is burden (bourdon or burdon) such as a "drone [pipe] of a bagpipe", the pedal point in an organ, or the lowest course of a lute. Α burden is also part of a song that is repeated at the end of each stanza, such as the chorus or refrain.

A villanelle, also known as villanesque, is a nineteen-line poetic form consisting of five tercets followed by a quatrain. There are two refrains and two repeating rhymes, with the first and third lines of the first tercet repeated alternately at the end of each subsequent stanza until the last stanza, which includes both repeated lines. The villanelle is an example of a fixed verse form. The word derives from Latin, then Italian, and is related to the initial subject of the form being the pastoral.

The form started as a simple ballad-like song with no fixed form; this fixed quality would only come much later, from the poem "Villanelle (J'ay perdu ma Tourterelle)" (1606) by Jean Passerat. From this point, its evolution into the "fixed form" used in the present day is debated. Despite its French origins, the majority of villanelles have been written in English, a trend which began in the late nineteenth century. The villanelle has been noted as a form that frequently treats the subject of obsessions, and one which appeals to outsiders; its defining feature of repetition prevents it from having a conventional tone.

Strophic form – also called verse-repeating form, chorus form, AAA song form, or one-part song form – is a song structure in which all verses or stanzas of the text are sung to the same music. Contrasting song forms include through-composed, with new music written for every stanza, and ternary form, with a contrasting central section.