In the early days rappers flowed on the mic continously for hours at a time..non stop. Most of the rhymes were pre-written but it was a cardinal sin to recite off a piece of paper at a jam. The early rappers started off just giving shout outs and chants and later incorporated small limricks. Later the rhymes became more elaborate, with choruses like 'Yes Yes Y'all, Or 'One Two Y'all To The Beat Y'all being used whenever an emcee needed to gather his wind or think of new rhymes. Most emcess rhymed on a four count as opposed to some of the complex patterns one hears today. However, early rappers took great pains to accomplish the art of showmanship. There was no grabbing of the crotch and pancing around the stage. Pioneering rapper Mele-Mel in a recent interview pointed out how he and other acts spent long hours reheasing both their rhymes and routines. The name of the game was to get props for rockin' the house. That meant being entertaining. Remember back in the late 70s early 80s, artists weren't doing one or two songs and leaving, they were on the mic all night long with folks just standing around watching. Folks had to come with it or be forever dissed.