<P> In music theory, "middle eight" (a common type of bridge) refers to the section of a song which has a significantly different melody and lyrics, which helps the song develop itself in a natural way by creating a contrast to the previously played, usually placed after the second chorus in a song . (Typically, a song consists of first verse, pre-chorus, chorus, second verse, pre-chorus, chorus, middle eight, chorus). Such sections often consist of new chords, but also frequently just alternate between two chords . It is called a middle eight because it happens in the middle of the song and the length is generally eight bars . Jazz players also call this "the release". </P> <P> A song employing a middle eight might look like: </P> <P> Middle eights are often quieter than the remainder of the song, in contrast with the solo, which is generally more energetic . In slower songs, however, a middle eight can be used to generate energy . By adding a powerful upbeat middle eight, musicians can then end the song with a hook in the end chorus and finale . </P> <P> The conclusion or outro of a song is a way of ending or completing the song . It signals to the listeners (or dancers) that the song is nearing its close . The reason for having an outro is that if a song just ended at the last bar of a section, such as on the last verse or the last chorus, this might feel too abrupt for listeners and dancers . By using an outro, the songwriter signals that the song is nearing its end . This gives a good sense of closure for the listener . For DJs, the outro is a signal that they need to be ready to mix in their next song . </P>

What is the difference between verse chorus and bridge