Jazz was more urban than the blues. Relying more on instrumentation, the sound was well-suited for listeners unfamiliar with the genre's conventions. It drew primarily on New Orleans blues, but also incorporated influences from Jewish-American musicians and composers like Benny Goodman and George Gershwin. In the 1920s, jazz bars became popular among white Americans, particularly young ones. As with ragtime before, and most major genres since, jazz was blamed for the moral degeneracy of the youth that visited these bars and listened to the music. In spite of the controversy, jazz emerged as the dominant sound of the country in the late 1920s in popularized forms that some called watered down, like swing music and big band. Though these, like jazz proper, were blamed for crime and delinquency, they had become mainstream by the 1930s. In the 1940s, pure jazz began to become more popular, along with the blues, with artists like Ella Fitzgerald ("A-Tisket, A-Tasket") and Billie Holiday ("Strange Fruit") becoming nationally successful.