We most often use the term “one hit wonder” to describe music performers who have had a single success. Sometimes these one-hit wonders produced novelty songs such as Jeannie C. Riley’s 1968 number-one hit “Harper Valley PTA.” In spite of the song gracing the charts in the 60s, hardly anyone today would admit to thinking the hit represented true quality. And since Ms. Riley never produced another top-seller, we can also agree she didn’t offer consistency.