Another school of thought is that it was called "Rock" because early on rockers danced mainly to a specific range of rock and roll songs that fell into a category that would be more accurately categorized as a of rock/funk. Examples of songs that fell into this genre would be "It's Just Begun" by Jimmy Castor, and the live version of "Sex Machine" by James Brown. These and many other songs were not quite soul nor rock and roll, yet, they provided the kind of hard driving beat that fueled the Uprock style of dance.