Rhythm is the repetition of a pattern of sounds in poetry. Rhythm is created by the alternation of long and short sounds and stressed and unstressed syllables. In Macbeth, Shakespeare creates rhythm in the witches’ words by using a pattern of stressed and unstressed (the opposite of iambic pentameter):

Rhythm is music’s pattern in time. Whatever other elements a given piece of music may have (e.g., patterns in pitch or timbre), rhythm is the one indispensable element of all music. Rhythm can exist without melody, as in the drumbeats of so-called primitive music, but melody cannot exist without rhythm.

1a : an ordered recurrent alternation of strong and weak elements in the flow of sound and silence in speech. b : a particular example or form of rhythm iambic rhythm. 2a : the aspect of music comprising all the elements (such as accent, meter, and tempo) that relate to forward movement.

You can create tension and release in music in the following ways:

1. Repetition. Repeating the same bundle of chords or notes creates rhythmic tension by establishing a predictable pattern and putting emphasis on these sounds.
2. Dissonance.
3. Key changes.
4. Dynamics.
5. Restriction.
6. Syncopation.

In music, tension is the anticipation music creates in a listener’s mind for relaxation or release. For example, tension may be produced through reiteration, increase in dynamic level, gradual motion to a higher or lower pitch, or (partial) syncopations between consonance and dissonance.

Chorus. The chorus is the big payoff and climax of the song. It’s also where the verse and pre-chorus have been reduced to a simple repeated sentiment. The chorus is often the title of the song and is usually very similar each time it occurs.