In order to understand the foundation of eminence in cultural activities, an attempt was made at learning why some works creators produce are more famous than others. This paper specifically investigates the differential fame of 5,046 themes by 10 eminent composers of classical music. Hypotheses derived from past research in creativity and esthetics were tested using a computerized content analysis. The results show that (a) the fame ofa musical theme is a positive linear function of melodic originality (rather then a curvilinear inverted-U function), and (b) melodic originality is a positive function of biographical stress and of historical time, and an inverted backwards-J function of age.Past research suggests that individual eminence in cultural activities is largely due to creative productivity (Albert, 1975; Simonton, 1977b). That is, the more famous creators are those who produce a large number of notable or influential works. But this very relationship raises yet another question, what are the attributes of a given work which make it earn posterity's high regard? Why are Shakespeare's Hamlet, and Michelangelo's David, and Beethoven's Fifth Symphony better known than comparable works by other creators, or even more appreciated than comparable efforts by the very same creators? Given that any creator's reputation rests on his or her finest works, individual differences in eminence cannot be fully appreciated without first understanding the causes that differentiate major from minor works. Even though there has been some empirical inquiry into the determinants of creative productivity across individuals (Simonton, 1977b) and into the relationship between quality and quantity of productivity within individuals (Simonton, 1977a), little scientific research has been directly aimed at the factors rendering some works more notable than others. To be sure, theoretical and experimental esthetics offers a large body of findings on tbe factors affecting the appreciation of litera-1. A Faculty Crant from the University of California made this project possible. I thank Susan Youel Simonton for helping me define the measure of melodic originality.