A song is a piece of music composed of lyrics and music. Its purpose is to evoke a specific feeling or emotion. Lyrics are the basis for the melody, while melodies express the emotion through the repetition of the same sentiment. A good song can reference feelings as effectively as its lyrics, and a poorly constructed one may combine feelings that are not representative of the matter.
A song has a basic structure, consisting of an intro, verse, pre-chorus, chorus, bridge, and outro. The intro must catch the listener’s attention without overpowering them. In addition to establishing the tempo and rhythm of a song, it must also introduce the singers’ voices.
A song can be composed for a solo singer, with background singers backing the singer, or for a duet, trio, or larger ensemble. While classical vocal forms are often accompanied by orchestral arrangements, a song can be sung a cappella or with instrumental accompaniment. For example, a folk singer may perform with an acoustic guitarist or a piano, while a jazz singer may perform with a jazz band or a big band.
The power of a song lies in the melody. Its melodic elements are crucial to the production of emotions. A beautiful melody can bring to life even the most mundane lyrics.