If you're asked about tempo or rhythm in poetry it's likely you'll think about Rap. Appropriate really, because RAP stands for Rhythm And Poetry. Dig down into the history of Rap and you'll see it has its roots in the nightclub scene of 1970s New York City. MCs - or DJs - would talk rhythmically in between songs against a beat backdrop. From this, the idea of creating rhythmic spoken word came into being.
Arguably, Rap goes back even further... and certainly there is a long history of the spoken word set to a beat. Listen for example to the political poetry of Gil Scott-Heron in the 60s, and try to tell me it didn't have an influence on Rap.
Here's an example...it's from 1969 and it's called Whitey on the Moon
Rhythm in poetry is not limited to Rap, of course. In a previous post I argued that certain poetic devices can create a rhythm in a poem because of the sounds they produce, either when spoken out loud, or via internal self-vocalisation when reading the text. It's all about the beat, and the pace of the poem. For example, in the written word there are stressed syllables (long sounding) and unstressed syllables (short sounding). An iamb such as Today is a two syllable word where the first is unstressed (short) followed by the second stressed syllable (long): toDAY.
Sonnets derive their rhythm from iambic pentameter (an iamb is a two syllable phrase) - words that are stressed and unstressed in pentameter - five beats or steps per line. Shakespeare knew how to do this:
[shall I] [comPARE] [thee TO] [a SUM][mer's DAY]
You get the idea how it works. Change the stress of the syllables - and the beat and pace of the poem changes.
Have a go at creating different rhythms in your poetry by using different steps within your stanzas and lines. You can read up more about rhythm and metre in poetry at this link.
Steve Wheeler