A song is a musical composition of vocals, music and lyrics. It can be performed a cappella or with a band or instrumental ensemble. Usually, songs contain a chorus, a pre-chorus, and an outro.
The form of a song determines the repetition of sections, the introduction of new melodies and harmonies, and the introduction of contrasting sections. Songs may be accompanied by instruments such as piano or guitar, or a singer can perform alone.
Most pop songs use a verse-chorus structure. During the chorus, a climax is reached, which is the culmination of a song’s big ideas. This part of the song typically contains the catchiest portion of the song.
Song structures vary from one type of song to another. Some songs only have a single section, such as the 12-bar blues. However, other songs can be divided into several different sections, including a verse and chorus. Occasionally, a song may have a coda, which is a shorter, reversal of the introduction.
In classical music, songs are usually accompanied by an orchestra, a solo pianist, or a small group of musicians. Singers may learn the melody through ear or by reading the sheet music.
Popular songs fall halfway between folk and art songs. They are often performed by a small group, such as a trio or a duet. Often, the lyrics reference topics or feelings, whereas the melody produces emotion.
A song can be about the everyday, a distant place, or a divine presence. There are many different genres of popular songs, including torch songs, blues songs, and novelty songs. Many songs also incorporate commercial elements, such as rapping.