Rhyme schemeA rhyme scheme is the pattern of rhymes at the end of each line of a poem or song. It is usually referred to by using letters to indicate which lines rhyme; lines designated with the same letter all rhyme with each other. An example of the ABAB rhyming scheme, from "To Anthea, who may Command him Anything", by Robert Herrick: These rhyme patterns have various effects, and can be used to: Control flow: If every line has the same rhyme (AAAA), the stanza will read as having a very quick flow, whereas a rhyme scheme like ABCABC can be felt to unfold more slowly.