Away to create rhythm in a speech is to use long words and phrases. short words and phrases. different words and phrases. repeated words and phrases.

I have found that good ryhme and rhythm in a speech comes from repetition and repeated words. A great example of this is Martin Luther King Jr's speech "I have a dream". These words are repaeted often giving a nice flow to the words. I hope this helps you! :)

Rhythm wouldn't be rhythm without repetition. Think of the batman theme song-- its repetition sets up the rhythm. Speeches rely upon great repetition as well.