The chorus often sharply contrasts the verse melodically, rhythmically, and harmonically, and assumes a higher level of dynamics and activity, often with added instrumentation. This is referred to as a "breakout chorus".[7] See: arrangement.
Contrasting verse–chorus form
Songs that use different music for the verse and chorus are in contrasting verse–chorus form. Examples include:
Songs that use the same harmony (chords) for the verse and chorus, such as the twelve bar blues, though the melody is different and the lyrics feature different verses and a repeated chorus, are in simple verse–chorus form. Examples include:
^RMS 1 Census-Catalogue of Manuscript Sources of Polyphonic Music, 1400-1550, edited by Herbert Kellman and Charles Hamm in 5 Volumes. Vol. I A-J (Volume 1), American Institute of Musicology, Inc. (1 January 1979), ISBN1595513116
^Michael Campbell & James Brody (2007), Rock and Roll: An Introduction, page 117
^Covach, John. "Form in Rock Music: A Primer", p.71, in Stein, Deborah (2005). Engaging Music: Essays in Music Analysis. New York: Oxford University Press. ISBN0-19-517010-5.