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                    Having 
                        reminded her students many times that composers like Wagner 
                        depended on the listeners’ remembering the earlier theme 
                        to recognize its later use, the teacher determined to 
                        make her students understand that themes recur throughout 
                        a piece. After several futile attempts to teach the role 
                        of theme, or the prominent repeated melody, in classical 
                        music, she was at wit’s end.   | 
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