The role requires repeating the same phrases over and over. For example:

"It was the same words, it was the same words, it was the same words, it was the same words..."

The phrases should follow the intonation of another text, for instance:

It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness...

So you would be intoning the text according to the phrasing and melody of the second text, but replacing the words with "it was the same words ... etc" This is just an example, not the actual text. 

The text has to be delivered as if you are trying to make yourself heard in a loud bar. Not a scream, but loud enough that the tone of voice changes.